./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Parts.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-numeric/Parts.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8 --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 663a2474dc11f7b5d0aa9a3ae9bbf5de1ab8d2ea5a060185a0446a8356edf6f1 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:00:31,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:00:31,822 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:00:31,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:00:31,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:00:31,854 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:00:31,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:00:31,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:00:31,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:00:31,861 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:00:31,863 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:00:31,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:00:31,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:00:31,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:00:31,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:00:31,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:00:31,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:00:31,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:00:31,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:00:31,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:00:31,879 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:00:31,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:00:31,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:00:31,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:00:31,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:00:31,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:00:31,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:00:31,890 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:00:31,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:00:31,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:00:31,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:00:31,893 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:00:31,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:00:31,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:00:31,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:00:31,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:00:31,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:00:31,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:00:31,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:00:31,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:00:31,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:00:31,901 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/config/svcomp-Overflow-64bit-Taipan_Default.epf [2021-11-07 01:00:31,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:00:31,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:00:31,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:00:31,938 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:00:31,938 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:00:31,938 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:00:31,938 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:00:31,938 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:00:31,939 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:00:31,939 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:00:31,939 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:00:31,939 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:00:31,939 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:00:31,940 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:00:31,940 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:00:31,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:00:31,941 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 01:00:31,941 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:00:31,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:00:31,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:00:31,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:00:31,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:00:31,942 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 01:00:31,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:00:31,943 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:00:31,943 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:00:31,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:00:31,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:00:31,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:00:31,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:00:31,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:00:31,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:00:31,950 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:00:31,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:00:31,950 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:00:31,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:00:31,951 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:00:31,951 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_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 663a2474dc11f7b5d0aa9a3ae9bbf5de1ab8d2ea5a060185a0446a8356edf6f1 [2021-11-07 01:00:32,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:00:32,237 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:00:32,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:00:32,241 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:00:32,242 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:00:32,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/termination-numeric/Parts.c [2021-11-07 01:00:32,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/data/5be63c6d2/f95a3eda49b445128c0dd1c0b15208d6/FLAG0add40c6b [2021-11-07 01:00:32,791 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:00:32,791 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/sv-benchmarks/c/termination-numeric/Parts.c [2021-11-07 01:00:32,798 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/data/5be63c6d2/f95a3eda49b445128c0dd1c0b15208d6/FLAG0add40c6b [2021-11-07 01:00:33,174 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/data/5be63c6d2/f95a3eda49b445128c0dd1c0b15208d6 [2021-11-07 01:00:33,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:00:33,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:00:33,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:00:33,180 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:00:33,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:00:33,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47cf3c4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33, skipping insertion in model container [2021-11-07 01:00:33,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:00:33,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:00:33,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:00:33,388 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:00:33,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:00:33,422 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:00:33,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33 WrapperNode [2021-11-07 01:00:33,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:00:33,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:00:33,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:00:33,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:00:33,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,467 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:00:33,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:00:33,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:00:33,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:00:33,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:00:33,518 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:00:33,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:00:33,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:00:33,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (1/1) ... [2021-11-07 01:00:33,531 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:00:33,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:33,559 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:00:33,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:00:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure parts [2021-11-07 01:00:33,626 INFO L138 BoogieDeclarations]: Found implementation of procedure parts [2021-11-07 01:00:33,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:00:33,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:00:33,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:00:33,955 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-07 01:00:33,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:00:33 BoogieIcfgContainer [2021-11-07 01:00:33,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:00:33,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:00:33,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:00:33,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:00:33,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:00:33" (1/3) ... [2021-11-07 01:00:33,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d043d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:00:33, skipping insertion in model container [2021-11-07 01:00:33,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:00:33" (2/3) ... [2021-11-07 01:00:33,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d043d8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:00:33, skipping insertion in model container [2021-11-07 01:00:33,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:00:33" (3/3) ... [2021-11-07 01:00:33,969 INFO L111 eAbstractionObserver]: Analyzing ICFG Parts.c [2021-11-07 01:00:33,975 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:00:33,975 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-07 01:00:34,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:00:34,039 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:00:34,039 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-07 01:00:34,059 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 25 states have (on average 1.68) internal successors, (42), 35 states have internal predecessors, (42), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-07 01:00:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 01:00:34,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:34,065 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 01:00:34,066 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:34,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1868692441, now seen corresponding path program 1 times [2021-11-07 01:00:34,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:34,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429988926] [2021-11-07 01:00:34,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:34,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:34,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:34,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:34,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:34,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429988926] [2021-11-07 01:00:34,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429988926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:34,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:34,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:00:34,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678313450] [2021-11-07 01:00:34,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:00:34,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:34,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:00:34,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:00:34,373 INFO L87 Difference]: Start difference. First operand has 41 states, 25 states have (on average 1.68) internal successors, (42), 35 states have internal predecessors, (42), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:34,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:34,507 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2021-11-07 01:00:34,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:00:34,509 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 01:00:34,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:34,518 INFO L225 Difference]: With dead ends: 82 [2021-11-07 01:00:34,518 INFO L226 Difference]: Without dead ends: 40 [2021-11-07 01:00:34,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:00:34,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-07 01:00:34,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-07 01:00:34,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 25 states have (on average 1.56) internal successors, (39), 34 states have internal predecessors, (39), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-07 01:00:34,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2021-11-07 01:00:34,565 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 6 [2021-11-07 01:00:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:34,566 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2021-11-07 01:00:34,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2021-11-07 01:00:34,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 01:00:34,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:34,569 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:34,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:00:34,569 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:34,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:34,570 INFO L85 PathProgramCache]: Analyzing trace with hash -621459525, now seen corresponding path program 1 times [2021-11-07 01:00:34,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:34,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978008877] [2021-11-07 01:00:34,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:34,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:34,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:34,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978008877] [2021-11-07 01:00:34,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978008877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:34,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:34,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 01:00:34,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205310677] [2021-11-07 01:00:34,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:00:34,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:34,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:00:34,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:00:34,627 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:34,708 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2021-11-07 01:00:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:00:34,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 01:00:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:34,712 INFO L225 Difference]: With dead ends: 96 [2021-11-07 01:00:34,712 INFO L226 Difference]: Without dead ends: 59 [2021-11-07 01:00:34,714 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:00:34,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-07 01:00:34,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2021-11-07 01:00:34,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.5) internal successors, (51), 43 states have internal predecessors, (51), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 01:00:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2021-11-07 01:00:34,729 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 11 [2021-11-07 01:00:34,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:34,729 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2021-11-07 01:00:34,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:00:34,730 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2021-11-07 01:00:34,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 01:00:34,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:34,731 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:34,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:00:34,732 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:34,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:34,733 INFO L85 PathProgramCache]: Analyzing trace with hash -2085540947, now seen corresponding path program 1 times [2021-11-07 01:00:34,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:34,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692825758] [2021-11-07 01:00:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:34,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:34,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:34,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:34,773 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:34,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692825758] [2021-11-07 01:00:34,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692825758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:34,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:34,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:00:34,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794301971] [2021-11-07 01:00:34,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:00:34,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:34,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:00:34,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:00:34,776 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:34,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:34,810 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2021-11-07 01:00:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:00:34,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-07 01:00:34,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:34,813 INFO L225 Difference]: With dead ends: 61 [2021-11-07 01:00:34,813 INFO L226 Difference]: Without dead ends: 60 [2021-11-07 01:00:34,814 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:00:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-07 01:00:34,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-11-07 01:00:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 47 states have internal predecessors, (55), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-07 01:00:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-11-07 01:00:34,826 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 12 [2021-11-07 01:00:34,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:34,827 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-11-07 01:00:34,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:34,827 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-11-07 01:00:34,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:00:34,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:34,828 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:34,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 01:00:34,829 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:34,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:34,830 INFO L85 PathProgramCache]: Analyzing trace with hash -227259820, now seen corresponding path program 1 times [2021-11-07 01:00:34,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:34,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690107274] [2021-11-07 01:00:34,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:34,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:34,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:34,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:34,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690107274] [2021-11-07 01:00:34,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690107274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:34,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:34,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:00:34,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453128498] [2021-11-07 01:00:34,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:00:34,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:34,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:00:34,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:00:34,875 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:34,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:34,902 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2021-11-07 01:00:34,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:00:34,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-07 01:00:34,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:34,905 INFO L225 Difference]: With dead ends: 57 [2021-11-07 01:00:34,905 INFO L226 Difference]: Without dead ends: 56 [2021-11-07 01:00:34,906 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:00:34,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-07 01:00:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-07 01:00:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 38 states have (on average 1.394736842105263) internal successors, (53), 46 states have internal predecessors, (53), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-07 01:00:34,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-11-07 01:00:34,917 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 13 [2021-11-07 01:00:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:34,918 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-11-07 01:00:34,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-11-07 01:00:34,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 01:00:34,919 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:34,920 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:34,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 01:00:34,920 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:34,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:34,921 INFO L85 PathProgramCache]: Analyzing trace with hash 646648992, now seen corresponding path program 1 times [2021-11-07 01:00:34,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:34,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538867026] [2021-11-07 01:00:34,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:34,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:00:34,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:34,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538867026] [2021-11-07 01:00:34,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538867026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:34,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:34,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:00:34,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380299910] [2021-11-07 01:00:34,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:00:34,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:34,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:00:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:00:34,966 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:35,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:35,008 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2021-11-07 01:00:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:00:35,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-07 01:00:35,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:35,010 INFO L225 Difference]: With dead ends: 61 [2021-11-07 01:00:35,010 INFO L226 Difference]: Without dead ends: 60 [2021-11-07 01:00:35,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:00:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-07 01:00:35,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-11-07 01:00:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 47 states have internal predecessors, (54), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-07 01:00:35,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 68 transitions. [2021-11-07 01:00:35,034 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 68 transitions. Word has length 15 [2021-11-07 01:00:35,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:35,034 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 68 transitions. [2021-11-07 01:00:35,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:35,035 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2021-11-07 01:00:35,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:00:35,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:35,036 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:35,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 01:00:35,037 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:35,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:35,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1428717623, now seen corresponding path program 1 times [2021-11-07 01:00:35,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:35,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120069339] [2021-11-07 01:00:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:35,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:35,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:00:35,108 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:35,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120069339] [2021-11-07 01:00:35,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120069339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:35,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:35,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:00:35,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499256163] [2021-11-07 01:00:35,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 01:00:35,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 01:00:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 01:00:35,113 INFO L87 Difference]: Start difference. First operand 57 states and 68 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:35,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:35,158 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2021-11-07 01:00:35,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 01:00:35,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-07 01:00:35,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:35,164 INFO L225 Difference]: With dead ends: 57 [2021-11-07 01:00:35,164 INFO L226 Difference]: Without dead ends: 56 [2021-11-07 01:00:35,165 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:00:35,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-07 01:00:35,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-07 01:00:35,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 39 states have (on average 1.358974358974359) internal successors, (53), 46 states have internal predecessors, (53), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-07 01:00:35,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-11-07 01:00:35,187 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 16 [2021-11-07 01:00:35,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:35,188 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-11-07 01:00:35,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:35,189 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-11-07 01:00:35,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 01:00:35,190 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:35,191 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:35,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 01:00:35,192 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:35,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:35,194 INFO L85 PathProgramCache]: Analyzing trace with hash 748704564, now seen corresponding path program 1 times [2021-11-07 01:00:35,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:35,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512246821] [2021-11-07 01:00:35,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:35,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:00:35,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:35,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512246821] [2021-11-07 01:00:35,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512246821] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:35,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490783501] [2021-11-07 01:00:35,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:35,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:35,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:35,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:35,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:00:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:35,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 01:00:35,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:00:35,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:35,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:00:35,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490783501] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:35,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [822626416] [2021-11-07 01:00:35,748 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 01:00:35,748 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:35,767 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:00:35,777 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:00:35,778 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:00:35,837 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:35,846 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 01:00:35,852 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-07 01:00:35,856 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 01:00:35,861 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-07 01:00:35,867 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:00:35,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:35,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:35,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:35,930 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:35,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:35,949 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:35,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:35,964 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:35,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:35,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,056 INFO L180 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-11-07 01:00:36,059 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:36,065 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,071 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:36,077 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,085 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:36,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,092 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:36,095 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,103 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:36,106 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,111 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:36,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,151 INFO L180 QuantifierPusher]: treesize reduction 29, result has 58.0 percent of original size [2021-11-07 01:00:36,154 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:36,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,215 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.8 percent of original size [2021-11-07 01:00:36,244 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 85 [2021-11-07 01:00:36,255 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,278 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:00:36,311 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,318 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,325 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:00:36,329 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:00:36,349 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,359 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-07 01:00:36,364 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,381 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,383 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,389 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-11-07 01:00:36,396 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,406 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:00:36,410 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:00:36,415 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 91 [2021-11-07 01:00:36,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,515 INFO L180 QuantifierPusher]: treesize reduction 42, result has 67.4 percent of original size [2021-11-07 01:00:36,531 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:00:36,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,584 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:00:36,587 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:36,591 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:36,602 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,609 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:36,611 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,619 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:36,624 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,629 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:36,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,653 INFO L180 QuantifierPusher]: treesize reduction 23, result has 63.5 percent of original size [2021-11-07 01:00:36,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:36,661 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:00:36,665 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:36,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,788 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,789 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,793 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:36,796 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,799 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,808 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,810 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,815 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:00:36,829 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,836 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,840 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:00:36,844 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:00:36,848 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:00:36,851 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,855 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,856 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:36,862 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,867 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,872 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:00:36,874 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,875 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,878 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:00:36,882 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:00:36,885 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:00:36,889 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,892 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:00:36,896 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,899 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:36,906 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,908 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,912 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,913 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,917 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:00:36,920 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:36,921 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,924 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:00:36,928 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:00:36,932 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:00:36,935 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:36,939 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:00:36,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:36,961 INFO L197 IcfgInterpreter]: Interpreting procedure parts with input of size 23 for LOIs [2021-11-07 01:00:36,965 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:00:37,631 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:00:37,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:37,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-07 01:00:37,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714288551] [2021-11-07 01:00:37,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:00:37,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:37,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:00:37,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:00:37,634 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-07 01:00:37,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:37,754 INFO L93 Difference]: Finished difference Result 104 states and 132 transitions. [2021-11-07 01:00:37,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:00:37,754 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 21 [2021-11-07 01:00:37,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:37,756 INFO L225 Difference]: With dead ends: 104 [2021-11-07 01:00:37,756 INFO L226 Difference]: Without dead ends: 103 [2021-11-07 01:00:37,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=534, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:00:37,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-07 01:00:37,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 86. [2021-11-07 01:00:37,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.3174603174603174) internal successors, (83), 70 states have internal predecessors, (83), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-11-07 01:00:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 109 transitions. [2021-11-07 01:00:37,772 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 109 transitions. Word has length 21 [2021-11-07 01:00:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:37,773 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 109 transitions. [2021-11-07 01:00:37,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-07 01:00:37,773 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 109 transitions. [2021-11-07 01:00:37,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 01:00:37,774 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:37,775 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:37,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:38,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:38,000 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:38,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:38,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1279999360, now seen corresponding path program 1 times [2021-11-07 01:00:38,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:38,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938424797] [2021-11-07 01:00:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:38,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:38,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:38,069 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:38,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938424797] [2021-11-07 01:00:38,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938424797] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:38,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649858259] [2021-11-07 01:00:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:38,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:38,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:38,071 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:38,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:00:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:38,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:00:38,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:38,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:00:38,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649858259] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:38,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [859021142] [2021-11-07 01:00:38,423 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-07 01:00:38,423 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:38,424 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:00:38,424 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:00:38,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:00:38,454 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,455 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 01:00:38,457 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-07 01:00:38,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 01:00:38,461 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-07 01:00:38,468 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:00:38,473 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,479 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:38,486 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,489 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:38,491 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,498 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:38,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,502 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:38,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,517 INFO L180 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-11-07 01:00:38,518 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:38,520 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,524 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:38,526 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,535 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:38,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,540 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:38,542 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:38,550 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,553 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:38,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,567 INFO L180 QuantifierPusher]: treesize reduction 29, result has 58.0 percent of original size [2021-11-07 01:00:38,569 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:38,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,599 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.8 percent of original size [2021-11-07 01:00:38,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 78 [2021-11-07 01:00:38,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,636 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:38,640 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,645 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-07 01:00:38,649 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:38,650 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,660 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:00:38,662 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:00:38,665 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,670 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-07 01:00:38,673 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,681 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:38,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,685 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-11-07 01:00:38,688 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:38,689 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,692 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:00:38,695 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:00:38,698 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,701 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 84 [2021-11-07 01:00:38,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,735 INFO L180 QuantifierPusher]: treesize reduction 25, result has 78.8 percent of original size [2021-11-07 01:00:38,741 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-07 01:00:38,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,766 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:00:38,768 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:38,771 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,775 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:38,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,783 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:38,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,789 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:38,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,794 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:38,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,808 INFO L180 QuantifierPusher]: treesize reduction 23, result has 63.5 percent of original size [2021-11-07 01:00:38,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:38,814 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:00:38,816 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:38,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,847 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-07 01:00:38,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,857 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:38,859 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,863 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:38,864 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,865 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:00:38,868 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:38,869 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,871 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:38,873 INFO L185 QuantifierPusher]: treesize reduction 48, result has 33.3 percent of original size 24 [2021-11-07 01:00:38,875 INFO L185 QuantifierPusher]: treesize reduction 49, result has 43.7 percent of original size 38 [2021-11-07 01:00:38,882 INFO L180 QuantifierPusher]: treesize reduction 49, result has 49.5 percent of original size [2021-11-07 01:00:38,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:38,891 INFO L180 QuantifierPusher]: treesize reduction 49, result has 56.3 percent of original size [2021-11-07 01:00:38,894 INFO L185 QuantifierPusher]: treesize reduction 46, result has 2.1 percent of original size 1 [2021-11-07 01:00:38,897 INFO L180 QuantifierPusher]: treesize reduction 49, result has 49.5 percent of original size [2021-11-07 01:00:38,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:38,907 INFO L180 QuantifierPusher]: treesize reduction 49, result has 56.3 percent of original size [2021-11-07 01:00:38,910 INFO L185 QuantifierPusher]: treesize reduction 46, result has 2.1 percent of original size 1 [2021-11-07 01:00:38,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-07 01:00:38,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:38,965 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,968 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:38,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,982 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:38,983 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,984 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:00:38,986 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:38,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:38,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:38,990 INFO L185 QuantifierPusher]: treesize reduction 48, result has 33.3 percent of original size 24 [2021-11-07 01:00:38,993 INFO L185 QuantifierPusher]: treesize reduction 49, result has 43.7 percent of original size 38 [2021-11-07 01:00:38,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,092 INFO L180 QuantifierPusher]: treesize reduction 49, result has 49.5 percent of original size [2021-11-07 01:00:39,097 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:39,100 INFO L180 QuantifierPusher]: treesize reduction 49, result has 56.3 percent of original size [2021-11-07 01:00:39,103 INFO L185 QuantifierPusher]: treesize reduction 46, result has 2.1 percent of original size 1 [2021-11-07 01:00:39,106 INFO L180 QuantifierPusher]: treesize reduction 49, result has 49.5 percent of original size [2021-11-07 01:00:39,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:39,114 INFO L180 QuantifierPusher]: treesize reduction 49, result has 56.3 percent of original size [2021-11-07 01:00:39,116 INFO L185 QuantifierPusher]: treesize reduction 46, result has 2.1 percent of original size 1 [2021-11-07 01:00:39,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,126 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:00:39,128 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:39,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,222 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:39,227 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:00:39,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:39,239 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:00:39,241 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:39,244 INFO L185 QuantifierPusher]: treesize reduction 3, result has 93.5 percent of original size 43 [2021-11-07 01:00:39,246 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:39,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-11-07 01:00:39,253 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:39,257 INFO L185 QuantifierPusher]: treesize reduction 3, result has 93.5 percent of original size 43 [2021-11-07 01:00:39,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:39,281 INFO L197 IcfgInterpreter]: Interpreting procedure parts with input of size 13 for LOIs [2021-11-07 01:00:39,285 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:00:39,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [859021142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:39,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:39,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [8, 8, 8] total 26 [2021-11-07 01:00:39,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553571349] [2021-11-07 01:00:39,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:00:39,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:39,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:00:39,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:00:39,898 INFO L87 Difference]: Start difference. First operand 86 states and 109 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 12 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:40,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:40,239 INFO L93 Difference]: Finished difference Result 212 states and 277 transitions. [2021-11-07 01:00:40,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:00:40,240 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 12 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-07 01:00:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:40,242 INFO L225 Difference]: With dead ends: 212 [2021-11-07 01:00:40,242 INFO L226 Difference]: Without dead ends: 159 [2021-11-07 01:00:40,244 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:00:40,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-11-07 01:00:40,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 119. [2021-11-07 01:00:40,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 97 states have internal predecessors, (115), 18 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (23), 18 states have call predecessors, (23), 18 states have call successors, (23) [2021-11-07 01:00:40,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 156 transitions. [2021-11-07 01:00:40,265 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 156 transitions. Word has length 24 [2021-11-07 01:00:40,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:40,266 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 156 transitions. [2021-11-07 01:00:40,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 12 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:40,266 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 156 transitions. [2021-11-07 01:00:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-07 01:00:40,268 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:40,268 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:40,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:40,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-11-07 01:00:40,484 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:40,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:40,484 INFO L85 PathProgramCache]: Analyzing trace with hash 966687055, now seen corresponding path program 1 times [2021-11-07 01:00:40,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:40,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19021910] [2021-11-07 01:00:40,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:40,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:40,557 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:00:40,557 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:40,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19021910] [2021-11-07 01:00:40,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19021910] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:40,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412331838] [2021-11-07 01:00:40,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:40,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:40,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:40,560 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:40,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 01:00:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:40,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:00:40,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 01:00:40,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 01:00:40,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412331838] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:40,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [940845215] [2021-11-07 01:00:40,909 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2021-11-07 01:00:40,909 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:40,910 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:00:40,910 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:00:40,910 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:00:40,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:40,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 01:00:40,921 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-07 01:00:40,922 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 01:00:40,924 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-07 01:00:40,925 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:00:40,929 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:40,934 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:40,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:40,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:40,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:40,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:40,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:40,961 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:00:40,962 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:40,971 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:40,973 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:40,981 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:00:40,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:40,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:40,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:40,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:40,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,010 INFO L180 QuantifierPusher]: treesize reduction 20, result has 64.9 percent of original size [2021-11-07 01:00:41,012 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:41,015 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,017 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:00:41,019 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,027 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:41,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,036 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 01:00:41,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:41,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,053 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 01:00:41,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,103 INFO L180 QuantifierPusher]: treesize reduction 14, result has 84.8 percent of original size [2021-11-07 01:00:41,106 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,108 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,111 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 40 [2021-11-07 01:00:41,112 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:00:41,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:00:41,121 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,126 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,127 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:00:41,131 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,133 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,134 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,136 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 01:00:41,138 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 01:00:41,147 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,149 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,151 INFO L185 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size 15 [2021-11-07 01:00:41,153 INFO L185 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size 28 [2021-11-07 01:00:41,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-11-07 01:00:41,172 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,177 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,178 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,181 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:00:41,182 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,198 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,201 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 01:00:41,204 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-11-07 01:00:41,206 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,212 INFO L185 QuantifierPusher]: treesize reduction 6, result has 71.4 percent of original size 15 [2021-11-07 01:00:41,213 INFO L185 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size 28 [2021-11-07 01:00:41,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,223 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 129 [2021-11-07 01:00:41,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,267 INFO L180 QuantifierPusher]: treesize reduction 14, result has 72.5 percent of original size [2021-11-07 01:00:41,269 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:41,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,272 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:41,275 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:41,282 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:00:41,292 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,298 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:41,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,307 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:00:41,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,328 INFO L180 QuantifierPusher]: treesize reduction 14, result has 72.5 percent of original size [2021-11-07 01:00:41,330 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:41,331 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:41,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,352 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,355 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-07 01:00:41,358 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,361 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,363 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,365 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,367 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-07 01:00:41,369 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,370 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,372 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:41,374 INFO L185 QuantifierPusher]: treesize reduction 48, result has 33.3 percent of original size 24 [2021-11-07 01:00:41,376 INFO L185 QuantifierPusher]: treesize reduction 49, result has 43.7 percent of original size 38 [2021-11-07 01:00:41,381 INFO L180 QuantifierPusher]: treesize reduction 49, result has 49.5 percent of original size [2021-11-07 01:00:41,385 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:41,389 INFO L180 QuantifierPusher]: treesize reduction 49, result has 69.6 percent of original size [2021-11-07 01:00:41,397 INFO L185 QuantifierPusher]: treesize reduction 8, result has 92.4 percent of original size 97 [2021-11-07 01:00:41,401 INFO L180 QuantifierPusher]: treesize reduction 49, result has 49.5 percent of original size [2021-11-07 01:00:41,405 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:41,410 INFO L180 QuantifierPusher]: treesize reduction 49, result has 69.6 percent of original size [2021-11-07 01:00:41,419 INFO L185 QuantifierPusher]: treesize reduction 8, result has 92.4 percent of original size 97 [2021-11-07 01:00:41,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,440 INFO L180 QuantifierPusher]: treesize reduction 20, result has 64.9 percent of original size [2021-11-07 01:00:41,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:41,447 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,448 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:00:41,452 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,456 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:41,460 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,466 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 01:00:41,468 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,472 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:41,474 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,481 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 94 [2021-11-07 01:00:41,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,496 INFO L180 QuantifierPusher]: treesize reduction 20, result has 64.9 percent of original size [2021-11-07 01:00:41,497 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:41,499 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,501 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:00:41,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,555 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,559 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 107 [2021-11-07 01:00:41,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,613 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,618 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:41,621 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 01:00:41,631 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,635 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:41,638 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,646 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 01:00:41,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,672 INFO L180 QuantifierPusher]: treesize reduction 8, result has 87.9 percent of original size [2021-11-07 01:00:41,676 INFO L185 QuantifierPusher]: treesize reduction 6, result has 84.6 percent of original size 33 [2021-11-07 01:00:41,679 INFO L180 QuantifierPusher]: treesize reduction 6, result has 88.7 percent of original size [2021-11-07 01:00:41,681 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:41,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:41,691 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,699 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:00:41,701 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,705 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:41,707 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,715 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-11-07 01:00:41,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,743 INFO L180 QuantifierPusher]: treesize reduction 8, result has 83.3 percent of original size [2021-11-07 01:00:41,749 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:00:41,751 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,753 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-11-07 01:00:41,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,759 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-07 01:00:41,762 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 01:00:41,777 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,781 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-07 01:00:41,783 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,791 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 100 [2021-11-07 01:00:41,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,841 INFO L180 QuantifierPusher]: treesize reduction 6, result has 93.3 percent of original size [2021-11-07 01:00:41,845 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:41,846 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 58 [2021-11-07 01:00:41,850 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-11-07 01:00:41,858 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,861 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 67 [2021-11-07 01:00:41,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:41,907 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-11-07 01:00:41,908 INFO L197 IcfgInterpreter]: Interpreting procedure parts with input of size 10 for LOIs [2021-11-07 01:00:41,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:41,943 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:00:42,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [940845215] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:42,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:42,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8, 8, 8] total 25 [2021-11-07 01:00:42,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794922456] [2021-11-07 01:00:42,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 01:00:42,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:42,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 01:00:42,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:00:42,633 INFO L87 Difference]: Start difference. First operand 119 states and 156 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:42,971 INFO L93 Difference]: Finished difference Result 200 states and 277 transitions. [2021-11-07 01:00:42,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:00:42,972 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-07 01:00:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:42,977 INFO L225 Difference]: With dead ends: 200 [2021-11-07 01:00:42,977 INFO L226 Difference]: Without dead ends: 147 [2021-11-07 01:00:42,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:00:42,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-11-07 01:00:42,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 138. [2021-11-07 01:00:43,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 104 states have (on average 1.2884615384615385) internal successors, (134), 112 states have internal predecessors, (134), 21 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (31), 21 states have call predecessors, (31), 21 states have call successors, (31) [2021-11-07 01:00:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 186 transitions. [2021-11-07 01:00:43,002 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 186 transitions. Word has length 29 [2021-11-07 01:00:43,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:43,002 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 186 transitions. [2021-11-07 01:00:43,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 11 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:43,003 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 186 transitions. [2021-11-07 01:00:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 01:00:43,005 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:43,006 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:43,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:43,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:43,228 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:43,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:43,229 INFO L85 PathProgramCache]: Analyzing trace with hash 349970590, now seen corresponding path program 1 times [2021-11-07 01:00:43,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:43,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505043744] [2021-11-07 01:00:43,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:43,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:00:43,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:43,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505043744] [2021-11-07 01:00:43,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505043744] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:43,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751706309] [2021-11-07 01:00:43,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:43,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:43,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:43,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:43,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 01:00:43,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:43,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:00:43,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:43,619 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 01:00:43,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:43,717 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-07 01:00:43,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751706309] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:43,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [480687789] [2021-11-07 01:00:43,722 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-07 01:00:43,722 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:43,724 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:00:43,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:43,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 13 [2021-11-07 01:00:43,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217947054] [2021-11-07 01:00:43,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:00:43,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:43,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:00:43,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:00:43,729 INFO L87 Difference]: Start difference. First operand 138 states and 186 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 01:00:43,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:43,833 INFO L93 Difference]: Finished difference Result 250 states and 336 transitions. [2021-11-07 01:00:43,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:00:43,833 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 41 [2021-11-07 01:00:43,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:43,837 INFO L225 Difference]: With dead ends: 250 [2021-11-07 01:00:43,837 INFO L226 Difference]: Without dead ends: 141 [2021-11-07 01:00:43,838 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:00:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-07 01:00:43,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 138. [2021-11-07 01:00:43,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 104 states have (on average 1.2788461538461537) internal successors, (133), 112 states have internal predecessors, (133), 21 states have call successors, (21), 4 states have call predecessors, (21), 6 states have return successors, (31), 21 states have call predecessors, (31), 21 states have call successors, (31) [2021-11-07 01:00:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 185 transitions. [2021-11-07 01:00:43,864 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 185 transitions. Word has length 41 [2021-11-07 01:00:43,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:43,865 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 185 transitions. [2021-11-07 01:00:43,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 01:00:43,865 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 185 transitions. [2021-11-07 01:00:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 01:00:43,873 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:43,874 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2021-11-07 01:00:43,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:44,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:44,089 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:44,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:44,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2004876435, now seen corresponding path program 2 times [2021-11-07 01:00:44,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:44,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86540641] [2021-11-07 01:00:44,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:44,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:44,186 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 01:00:44,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:44,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86540641] [2021-11-07 01:00:44,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86540641] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:44,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898982008] [2021-11-07 01:00:44,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:00:44,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:44,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:44,188 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:44,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:00:44,320 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-07 01:00:44,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:00:44,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:00:44,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 01:00:44,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:44,725 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-07 01:00:44,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898982008] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:44,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [509192304] [2021-11-07 01:00:44,727 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 01:00:44,728 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:44,728 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:00:44,728 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:00:44,728 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:00:44,736 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,737 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 01:00:44,739 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-07 01:00:44,740 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 01:00:44,742 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-07 01:00:44,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:00:44,747 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,751 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:44,755 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,757 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:44,758 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,761 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:44,763 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,765 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:44,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,775 INFO L180 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-11-07 01:00:44,777 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:44,779 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,780 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:44,782 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,786 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:44,787 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,789 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:44,791 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,794 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:00:44,795 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,798 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:44,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,809 INFO L180 QuantifierPusher]: treesize reduction 29, result has 58.0 percent of original size [2021-11-07 01:00:44,810 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:44,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,826 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.8 percent of original size [2021-11-07 01:00:44,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:00:44,852 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,856 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:44,857 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:00:44,862 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:44,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,869 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:00:44,870 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:00:44,872 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,875 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-07 01:00:44,877 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,881 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:44,882 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,884 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:00:44,886 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:44,887 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,889 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:00:44,891 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:00:44,893 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,895 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-07 01:00:44,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,917 INFO L180 QuantifierPusher]: treesize reduction 26, result has 77.6 percent of original size [2021-11-07 01:00:44,921 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-07 01:00:44,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,941 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:00:44,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:44,945 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,948 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:44,950 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,952 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:44,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:00:44,958 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:44,961 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:00:44,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,970 INFO L180 QuantifierPusher]: treesize reduction 23, result has 63.5 percent of original size [2021-11-07 01:00:44,972 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:44,976 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:00:44,978 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:00:44,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:44,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,044 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,046 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,047 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,049 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:45,051 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,053 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,055 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,056 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,058 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:00:45,059 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,060 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,062 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:00:45,065 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:00:45,067 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:00:45,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,072 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,073 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:45,077 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,081 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,085 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:00:45,087 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,088 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,091 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:00:45,093 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:00:45,096 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:00:45,098 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,101 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:00:45,103 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,106 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,109 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:00:45,111 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,113 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,115 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,116 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,118 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:00:45,119 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:00:45,120 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,122 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:00:45,124 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:00:45,127 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:00:45,129 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:00:45,131 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:00:45,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:00:45,146 INFO L197 IcfgInterpreter]: Interpreting procedure parts with input of size 20 for LOIs [2021-11-07 01:00:45,149 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:00:45,819 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:00:45,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:45,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-11-07 01:00:45,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246557448] [2021-11-07 01:00:45,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 01:00:45,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:45,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 01:00:45,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=938, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:00:45,822 INFO L87 Difference]: Start difference. First operand 138 states and 185 transitions. Second operand has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 01:00:46,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:46,092 INFO L93 Difference]: Finished difference Result 286 states and 398 transitions. [2021-11-07 01:00:46,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:00:46,093 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 48 [2021-11-07 01:00:46,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:46,096 INFO L225 Difference]: With dead ends: 286 [2021-11-07 01:00:46,096 INFO L226 Difference]: Without dead ends: 285 [2021-11-07 01:00:46,098 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=359, Invalid=1533, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 01:00:46,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-07 01:00:46,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 228. [2021-11-07 01:00:46,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 176 states have (on average 1.2670454545454546) internal successors, (223), 184 states have internal predecessors, (223), 39 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (61), 39 states have call predecessors, (61), 39 states have call successors, (61) [2021-11-07 01:00:46,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 323 transitions. [2021-11-07 01:00:46,125 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 323 transitions. Word has length 48 [2021-11-07 01:00:46,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:46,125 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 323 transitions. [2021-11-07 01:00:46,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 22 states have internal predecessors, (46), 10 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 01:00:46,126 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 323 transitions. [2021-11-07 01:00:46,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 01:00:46,128 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:46,128 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:46,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:46,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable320 [2021-11-07 01:00:46,352 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:46,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:46,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1333844599, now seen corresponding path program 2 times [2021-11-07 01:00:46,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:46,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695009775] [2021-11-07 01:00:46,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:46,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:46,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:46,446 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 17 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-07 01:00:46,447 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:46,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695009775] [2021-11-07 01:00:46,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695009775] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:46,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350351266] [2021-11-07 01:00:46,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:00:46,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:46,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:46,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:46,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 01:00:46,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:00:46,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:00:46,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:00:46,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:46,918 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 01:00:46,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-07 01:00:47,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350351266] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:47,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [307628580] [2021-11-07 01:00:47,209 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-07 01:00:47,209 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:47,210 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:00:47,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:47,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2021-11-07 01:00:47,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388872844] [2021-11-07 01:00:47,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 01:00:47,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:47,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 01:00:47,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:00:47,215 INFO L87 Difference]: Start difference. First operand 228 states and 323 transitions. Second operand has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 20 states have internal predecessors, (86), 9 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 01:00:47,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:47,854 INFO L93 Difference]: Finished difference Result 540 states and 829 transitions. [2021-11-07 01:00:47,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:00:47,855 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 20 states have internal predecessors, (86), 9 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 50 [2021-11-07 01:00:47,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:47,864 INFO L225 Difference]: With dead ends: 540 [2021-11-07 01:00:47,865 INFO L226 Difference]: Without dead ends: 438 [2021-11-07 01:00:47,867 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 01:00:47,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-11-07 01:00:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 402. [2021-11-07 01:00:47,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 315 states have (on average 1.276190476190476) internal successors, (402), 322 states have internal predecessors, (402), 69 states have call successors, (69), 9 states have call predecessors, (69), 13 states have return successors, (112), 70 states have call predecessors, (112), 69 states have call successors, (112) [2021-11-07 01:00:47,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 583 transitions. [2021-11-07 01:00:47,933 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 583 transitions. Word has length 50 [2021-11-07 01:00:47,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:47,933 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 583 transitions. [2021-11-07 01:00:47,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 20 states have internal predecessors, (86), 9 states have call successors, (12), 7 states have call predecessors, (12), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-07 01:00:47,934 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 583 transitions. [2021-11-07 01:00:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 01:00:47,936 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:47,936 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:47,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:48,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable375 [2021-11-07 01:00:48,154 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:48,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:48,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1426196795, now seen corresponding path program 1 times [2021-11-07 01:00:48,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:48,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184931309] [2021-11-07 01:00:48,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:48,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 01:00:48,204 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:48,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184931309] [2021-11-07 01:00:48,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184931309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:48,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:48,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:00:48,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223156956] [2021-11-07 01:00:48,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:00:48,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:48,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:00:48,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:00:48,209 INFO L87 Difference]: Start difference. First operand 402 states and 583 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:48,251 INFO L93 Difference]: Finished difference Result 412 states and 622 transitions. [2021-11-07 01:00:48,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:00:48,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-11-07 01:00:48,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:48,258 INFO L225 Difference]: With dead ends: 412 [2021-11-07 01:00:48,258 INFO L226 Difference]: Without dead ends: 411 [2021-11-07 01:00:48,259 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:00:48,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-07 01:00:48,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 401. [2021-11-07 01:00:48,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 315 states have (on average 1.2666666666666666) internal successors, (399), 321 states have internal predecessors, (399), 69 states have call successors, (69), 9 states have call predecessors, (69), 13 states have return successors, (112), 70 states have call predecessors, (112), 69 states have call successors, (112) [2021-11-07 01:00:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 580 transitions. [2021-11-07 01:00:48,329 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 580 transitions. Word has length 55 [2021-11-07 01:00:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:48,330 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 580 transitions. [2021-11-07 01:00:48,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 01:00:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 580 transitions. [2021-11-07 01:00:48,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 01:00:48,334 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:48,334 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:48,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2021-11-07 01:00:48,335 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:48,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash -2096368000, now seen corresponding path program 1 times [2021-11-07 01:00:48,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:48,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032716724] [2021-11-07 01:00:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:48,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:48,415 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-07 01:00:48,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:48,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032716724] [2021-11-07 01:00:48,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032716724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:48,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:48,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:00:48,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576537246] [2021-11-07 01:00:48,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:00:48,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:48,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:00:48,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:00:48,418 INFO L87 Difference]: Start difference. First operand 401 states and 580 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 01:00:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:48,482 INFO L93 Difference]: Finished difference Result 447 states and 654 transitions. [2021-11-07 01:00:48,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:00:48,482 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 59 [2021-11-07 01:00:48,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:48,487 INFO L225 Difference]: With dead ends: 447 [2021-11-07 01:00:48,487 INFO L226 Difference]: Without dead ends: 446 [2021-11-07 01:00:48,488 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:00:48,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-11-07 01:00:48,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 429. [2021-11-07 01:00:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 337 states have (on average 1.2551928783382789) internal successors, (423), 341 states have internal predecessors, (423), 72 states have call successors, (72), 9 states have call predecessors, (72), 16 states have return successors, (129), 78 states have call predecessors, (129), 72 states have call successors, (129) [2021-11-07 01:00:48,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 624 transitions. [2021-11-07 01:00:48,526 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 624 transitions. Word has length 59 [2021-11-07 01:00:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:48,527 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 624 transitions. [2021-11-07 01:00:48,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 01:00:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 624 transitions. [2021-11-07 01:00:48,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 01:00:48,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:48,529 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:48,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2021-11-07 01:00:48,529 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting partsErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:48,530 INFO L85 PathProgramCache]: Analyzing trace with hash -562898500, now seen corresponding path program 1 times [2021-11-07 01:00:48,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:48,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913532282] [2021-11-07 01:00:48,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:48,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:48,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 01:00:48,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:48,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913532282] [2021-11-07 01:00:48,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913532282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:48,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:00:48,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 01:00:48,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119437709] [2021-11-07 01:00:48,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:00:48,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:48,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:00:48,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:00:48,577 INFO L87 Difference]: Start difference. First operand 429 states and 624 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 01:00:48,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:48,653 INFO L93 Difference]: Finished difference Result 673 states and 1043 transitions. [2021-11-07 01:00:48,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:00:48,654 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 60 [2021-11-07 01:00:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:48,658 INFO L225 Difference]: With dead ends: 673 [2021-11-07 01:00:48,658 INFO L226 Difference]: Without dead ends: 435 [2021-11-07 01:00:48,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:00:48,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-11-07 01:00:48,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2021-11-07 01:00:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 338 states have (on average 1.2485207100591715) internal successors, (422), 343 states have internal predecessors, (422), 72 states have call successors, (72), 9 states have call predecessors, (72), 17 states have return successors, (132), 78 states have call predecessors, (132), 72 states have call successors, (132) [2021-11-07 01:00:48,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 626 transitions. [2021-11-07 01:00:48,700 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 626 transitions. Word has length 60 [2021-11-07 01:00:48,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:48,701 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 626 transitions. [2021-11-07 01:00:48,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-07 01:00:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 626 transitions. [2021-11-07 01:00:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 01:00:48,703 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:48,703 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:48,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2021-11-07 01:00:48,704 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting partsErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:48,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:48,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2013248551, now seen corresponding path program 2 times [2021-11-07 01:00:48,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:48,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164849033] [2021-11-07 01:00:48,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:48,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:48,757 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 47 proven. 14 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-11-07 01:00:48,758 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:48,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164849033] [2021-11-07 01:00:48,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164849033] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:48,758 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102080710] [2021-11-07 01:00:48,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:00:48,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:48,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:48,760 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:48,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 01:00:48,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:00:48,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:00:48,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:00:48,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:49,133 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-07 01:00:49,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-11-07 01:00:49,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102080710] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:00:49,291 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:00:49,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 11 [2021-11-07 01:00:49,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463700493] [2021-11-07 01:00:49,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:00:49,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:49,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:00:49,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:00:49,293 INFO L87 Difference]: Start difference. First operand 431 states and 626 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 01:00:49,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:49,342 INFO L93 Difference]: Finished difference Result 444 states and 645 transitions. [2021-11-07 01:00:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:00:49,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2021-11-07 01:00:49,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:49,347 INFO L225 Difference]: With dead ends: 444 [2021-11-07 01:00:49,347 INFO L226 Difference]: Without dead ends: 443 [2021-11-07 01:00:49,348 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:00:49,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-11-07 01:00:49,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 442. [2021-11-07 01:00:49,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 349 states have (on average 1.2492836676217765) internal successors, (436), 351 states have internal predecessors, (436), 72 states have call successors, (72), 9 states have call predecessors, (72), 17 states have return successors, (132), 81 states have call predecessors, (132), 72 states have call successors, (132) [2021-11-07 01:00:49,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 640 transitions. [2021-11-07 01:00:49,384 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 640 transitions. Word has length 70 [2021-11-07 01:00:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:49,385 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 640 transitions. [2021-11-07 01:00:49,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-07 01:00:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 640 transitions. [2021-11-07 01:00:49,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 01:00:49,387 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:49,387 INFO L513 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:49,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:49,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:49,604 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:49,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:49,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1317589094, now seen corresponding path program 1 times [2021-11-07 01:00:49,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:49,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304993768] [2021-11-07 01:00:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:49,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:49,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:49,674 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:00:49,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:49,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304993768] [2021-11-07 01:00:49,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304993768] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:49,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758400230] [2021-11-07 01:00:49,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:49,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:49,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:49,689 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:49,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 01:00:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:49,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:00:49,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:50,143 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 46 proven. 15 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-07 01:00:50,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:50,308 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 25 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-07 01:00:50,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758400230] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:50,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [456446966] [2021-11-07 01:00:50,314 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-07 01:00:50,314 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:50,315 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:00:50,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:50,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2021-11-07 01:00:50,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243963963] [2021-11-07 01:00:50,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:00:50,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:50,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:00:50,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:00:50,319 INFO L87 Difference]: Start difference. First operand 442 states and 640 transitions. Second operand has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-07 01:00:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:50,517 INFO L93 Difference]: Finished difference Result 656 states and 955 transitions. [2021-11-07 01:00:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:00:50,518 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) Word has length 62 [2021-11-07 01:00:50,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:50,521 INFO L225 Difference]: With dead ends: 656 [2021-11-07 01:00:50,522 INFO L226 Difference]: Without dead ends: 442 [2021-11-07 01:00:50,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:00:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-07 01:00:50,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-11-07 01:00:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 349 states have (on average 1.2378223495702005) internal successors, (432), 351 states have internal predecessors, (432), 72 states have call successors, (72), 9 states have call predecessors, (72), 17 states have return successors, (132), 81 states have call predecessors, (132), 72 states have call successors, (132) [2021-11-07 01:00:50,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 636 transitions. [2021-11-07 01:00:50,558 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 636 transitions. Word has length 62 [2021-11-07 01:00:50,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:50,558 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 636 transitions. [2021-11-07 01:00:50,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-07 01:00:50,559 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 636 transitions. [2021-11-07 01:00:50,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 01:00:50,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:50,563 INFO L513 BasicCegarLoop]: trace histogram [8, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:50,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:50,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:50,784 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:50,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1216568717, now seen corresponding path program 1 times [2021-11-07 01:00:50,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:50,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438304783] [2021-11-07 01:00:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:50,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:50,839 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 47 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 01:00:50,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:50,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438304783] [2021-11-07 01:00:50,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438304783] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:50,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015881063] [2021-11-07 01:00:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:50,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:50,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:50,841 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:50,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 01:00:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:51,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:00:51,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:51,280 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-07 01:00:51,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 47 proven. 12 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-07 01:00:51,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015881063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:51,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [194127514] [2021-11-07 01:00:51,462 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-07 01:00:51,463 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:51,463 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:00:51,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:51,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 9 [2021-11-07 01:00:51,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145918192] [2021-11-07 01:00:51,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 01:00:51,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 01:00:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-07 01:00:51,467 INFO L87 Difference]: Start difference. First operand 442 states and 636 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 01:00:51,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:51,646 INFO L93 Difference]: Finished difference Result 856 states and 1261 transitions. [2021-11-07 01:00:51,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:00:51,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 71 [2021-11-07 01:00:51,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:51,652 INFO L225 Difference]: With dead ends: 856 [2021-11-07 01:00:51,652 INFO L226 Difference]: Without dead ends: 609 [2021-11-07 01:00:51,655 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:00:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2021-11-07 01:00:51,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 585. [2021-11-07 01:00:51,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 464 states have (on average 1.228448275862069) internal successors, (570), 464 states have internal predecessors, (570), 85 states have call successors, (85), 18 states have call predecessors, (85), 32 states have return successors, (156), 102 states have call predecessors, (156), 85 states have call successors, (156) [2021-11-07 01:00:51,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 811 transitions. [2021-11-07 01:00:51,719 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 811 transitions. Word has length 71 [2021-11-07 01:00:51,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:51,720 INFO L470 AbstractCegarLoop]: Abstraction has 585 states and 811 transitions. [2021-11-07 01:00:51,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-07 01:00:51,720 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 811 transitions. [2021-11-07 01:00:51,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:00:51,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:51,727 INFO L513 BasicCegarLoop]: trace histogram [9, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:51,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:51,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable381 [2021-11-07 01:00:51,940 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:51,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash -960832100, now seen corresponding path program 2 times [2021-11-07 01:00:51,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:51,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357898031] [2021-11-07 01:00:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:51,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:52,000 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 69 proven. 17 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-07 01:00:52,001 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:52,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357898031] [2021-11-07 01:00:52,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357898031] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:52,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2042668586] [2021-11-07 01:00:52,002 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:00:52,002 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:52,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:52,003 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:52,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 01:00:52,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-07 01:00:52,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:00:52,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:00:52,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:52,523 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:00:52,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:52,774 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 76 proven. 14 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 01:00:52,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2042668586] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:52,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:00:52,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2021-11-07 01:00:52,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549950815] [2021-11-07 01:00:52,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:00:52,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:00:52,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:00:52,777 INFO L87 Difference]: Start difference. First operand 585 states and 811 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-07 01:00:52,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:52,946 INFO L93 Difference]: Finished difference Result 1030 states and 1490 transitions. [2021-11-07 01:00:52,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:00:52,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) Word has length 80 [2021-11-07 01:00:52,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:52,953 INFO L225 Difference]: With dead ends: 1030 [2021-11-07 01:00:52,953 INFO L226 Difference]: Without dead ends: 690 [2021-11-07 01:00:52,956 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 154 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:00:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-11-07 01:00:53,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 600. [2021-11-07 01:00:53,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 479 states have (on average 1.2192066805845512) internal successors, (584), 470 states have internal predecessors, (584), 84 states have call successors, (84), 17 states have call predecessors, (84), 33 states have return successors, (160), 112 states have call predecessors, (160), 84 states have call successors, (160) [2021-11-07 01:00:53,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 828 transitions. [2021-11-07 01:00:53,032 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 828 transitions. Word has length 80 [2021-11-07 01:00:53,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:53,032 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 828 transitions. [2021-11-07 01:00:53,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-07 01:00:53,033 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 828 transitions. [2021-11-07 01:00:53,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:00:53,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:53,035 INFO L513 BasicCegarLoop]: trace histogram [9, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:53,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:53,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:53,261 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:53,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:53,262 INFO L85 PathProgramCache]: Analyzing trace with hash -272193550, now seen corresponding path program 3 times [2021-11-07 01:00:53,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:53,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628932813] [2021-11-07 01:00:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:53,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 75 proven. 14 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-07 01:00:53,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:53,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628932813] [2021-11-07 01:00:53,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628932813] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:53,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171558598] [2021-11-07 01:00:53,319 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:00:53,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:53,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:53,320 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:53,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 01:00:53,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:00:53,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:00:53,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 01:00:53,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:53,878 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 102 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 01:00:53,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 74 proven. 23 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-07 01:00:54,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [171558598] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:54,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [990559829] [2021-11-07 01:00:54,131 INFO L159 IcfgInterpreter]: Started Sifa with 26 locations of interest [2021-11-07 01:00:54,132 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:54,132 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:00:54,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:54,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-07 01:00:54,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578609346] [2021-11-07 01:00:54,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:00:54,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:54,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:00:54,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:00:54,134 INFO L87 Difference]: Start difference. First operand 600 states and 828 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-07 01:00:54,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:54,301 INFO L93 Difference]: Finished difference Result 1008 states and 1419 transitions. [2021-11-07 01:00:54,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 01:00:54,304 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 80 [2021-11-07 01:00:54,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:54,308 INFO L225 Difference]: With dead ends: 1008 [2021-11-07 01:00:54,308 INFO L226 Difference]: Without dead ends: 526 [2021-11-07 01:00:54,312 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 153 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:00:54,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-11-07 01:00:54,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 525. [2021-11-07 01:00:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 422 states have (on average 1.2109004739336493) internal successors, (511), 407 states have internal predecessors, (511), 72 states have call successors, (72), 17 states have call predecessors, (72), 27 states have return successors, (128), 100 states have call predecessors, (128), 72 states have call successors, (128) [2021-11-07 01:00:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 711 transitions. [2021-11-07 01:00:54,347 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 711 transitions. Word has length 80 [2021-11-07 01:00:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:54,348 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 711 transitions. [2021-11-07 01:00:54,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-11-07 01:00:54,348 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 711 transitions. [2021-11-07 01:00:54,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:00:54,350 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:54,350 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:54,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:54,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:54,563 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:54,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:54,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1385987789, now seen corresponding path program 1 times [2021-11-07 01:00:54,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:54,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699049418] [2021-11-07 01:00:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:54,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:54,627 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 42 proven. 23 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-07 01:00:54,628 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:54,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699049418] [2021-11-07 01:00:54,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699049418] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:54,628 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007134829] [2021-11-07 01:00:54,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:54,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:54,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:54,630 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:54,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 01:00:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:55,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:00:55,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:55,302 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 42 proven. 23 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-07 01:00:55,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:55,497 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 42 proven. 23 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-07 01:00:55,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007134829] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:55,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [758631405] [2021-11-07 01:00:55,500 INFO L159 IcfgInterpreter]: Started Sifa with 28 locations of interest [2021-11-07 01:00:55,500 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:55,500 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:00:55,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:55,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2021-11-07 01:00:55,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510934812] [2021-11-07 01:00:55,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 01:00:55,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:55,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 01:00:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:00:55,506 INFO L87 Difference]: Start difference. First operand 525 states and 711 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-07 01:00:55,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:55,710 INFO L93 Difference]: Finished difference Result 917 states and 1275 transitions. [2021-11-07 01:00:55,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:00:55,713 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 80 [2021-11-07 01:00:55,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:55,717 INFO L225 Difference]: With dead ends: 917 [2021-11-07 01:00:55,718 INFO L226 Difference]: Without dead ends: 484 [2021-11-07 01:00:55,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 159 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:00:55,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-07 01:00:55,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 473. [2021-11-07 01:00:55,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 376 states have (on average 1.1914893617021276) internal successors, (448), 369 states have internal predecessors, (448), 68 states have call successors, (68), 17 states have call predecessors, (68), 25 states have return successors, (106), 86 states have call predecessors, (106), 67 states have call successors, (106) [2021-11-07 01:00:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 622 transitions. [2021-11-07 01:00:55,762 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 622 transitions. Word has length 80 [2021-11-07 01:00:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:55,762 INFO L470 AbstractCegarLoop]: Abstraction has 473 states and 622 transitions. [2021-11-07 01:00:55,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 9 states have internal predecessors, (49), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-07 01:00:55,763 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 622 transitions. [2021-11-07 01:00:55,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 01:00:55,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:55,765 INFO L513 BasicCegarLoop]: trace histogram [11, 8, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:55,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:55,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:55,979 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:55,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:55,980 INFO L85 PathProgramCache]: Analyzing trace with hash 208816725, now seen corresponding path program 1 times [2021-11-07 01:00:55,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:55,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321314750] [2021-11-07 01:00:55,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:55,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:56,087 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-07 01:00:56,087 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:56,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321314750] [2021-11-07 01:00:56,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321314750] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:56,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417769206] [2021-11-07 01:00:56,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:56,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:56,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:56,089 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:56,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 01:00:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:56,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:00:56,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 120 proven. 32 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-11-07 01:00:56,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:57,152 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-11-07 01:00:57,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417769206] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:57,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [881942157] [2021-11-07 01:00:57,155 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2021-11-07 01:00:57,155 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:57,156 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:00:57,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:57,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2021-11-07 01:00:57,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411326615] [2021-11-07 01:00:57,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:00:57,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:57,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:00:57,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:00:57,160 INFO L87 Difference]: Start difference. First operand 473 states and 622 transitions. Second operand has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-11-07 01:00:57,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:57,357 INFO L93 Difference]: Finished difference Result 867 states and 1151 transitions. [2021-11-07 01:00:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:00:57,358 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 101 [2021-11-07 01:00:57,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:57,362 INFO L225 Difference]: With dead ends: 867 [2021-11-07 01:00:57,362 INFO L226 Difference]: Without dead ends: 504 [2021-11-07 01:00:57,365 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:00:57,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-11-07 01:00:57,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 497. [2021-11-07 01:00:57,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 396 states have (on average 1.1818181818181819) internal successors, (468), 390 states have internal predecessors, (468), 72 states have call successors, (72), 17 states have call predecessors, (72), 25 states have return successors, (110), 89 states have call predecessors, (110), 71 states have call successors, (110) [2021-11-07 01:00:57,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 650 transitions. [2021-11-07 01:00:57,398 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 650 transitions. Word has length 101 [2021-11-07 01:00:57,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:57,399 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 650 transitions. [2021-11-07 01:00:57,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.5) internal successors, (63), 18 states have internal predecessors, (63), 8 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-11-07 01:00:57,399 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 650 transitions. [2021-11-07 01:00:57,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 01:00:57,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:57,401 INFO L513 BasicCegarLoop]: trace histogram [12, 9, 6, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:57,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:57,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:57,628 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:57,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:57,629 INFO L85 PathProgramCache]: Analyzing trace with hash -677324522, now seen corresponding path program 2 times [2021-11-07 01:00:57,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:57,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038525089] [2021-11-07 01:00:57,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:57,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 87 proven. 48 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-07 01:00:57,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:57,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038525089] [2021-11-07 01:00:57,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038525089] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:57,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628518982] [2021-11-07 01:00:57,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:00:57,732 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:57,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:57,733 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:57,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 01:00:58,208 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 01:00:58,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:00:58,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:00:58,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:00:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 143 proven. 40 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-11-07 01:00:58,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:00:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 87 proven. 48 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-11-07 01:00:58,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628518982] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:00:58,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [660562057] [2021-11-07 01:00:58,879 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2021-11-07 01:00:58,879 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:00:58,879 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:00:58,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:00:58,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2021-11-07 01:00:58,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445186471] [2021-11-07 01:00:58,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:00:58,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:00:58,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:00:58,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:00:58,883 INFO L87 Difference]: Start difference. First operand 497 states and 650 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 9 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-07 01:00:59,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:00:59,229 INFO L93 Difference]: Finished difference Result 905 states and 1220 transitions. [2021-11-07 01:00:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 01:00:59,230 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 9 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 110 [2021-11-07 01:00:59,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:00:59,247 INFO L225 Difference]: With dead ends: 905 [2021-11-07 01:00:59,248 INFO L226 Difference]: Without dead ends: 529 [2021-11-07 01:00:59,251 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2021-11-07 01:00:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-11-07 01:00:59,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 509. [2021-11-07 01:00:59,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 405 states have (on average 1.1777777777777778) internal successors, (477), 399 states have internal predecessors, (477), 73 states have call successors, (73), 19 states have call predecessors, (73), 27 states have return successors, (111), 90 states have call predecessors, (111), 72 states have call successors, (111) [2021-11-07 01:00:59,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 661 transitions. [2021-11-07 01:00:59,313 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 661 transitions. Word has length 110 [2021-11-07 01:00:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:00:59,313 INFO L470 AbstractCegarLoop]: Abstraction has 509 states and 661 transitions. [2021-11-07 01:00:59,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 17 states have internal predecessors, (67), 9 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2021-11-07 01:00:59,314 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 661 transitions. [2021-11-07 01:00:59,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 01:00:59,316 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:00:59,316 INFO L513 BasicCegarLoop]: trace histogram [14, 9, 8, 6, 6, 6, 6, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:00:59,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 01:00:59,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:59,537 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:00:59,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:00:59,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1794010198, now seen corresponding path program 3 times [2021-11-07 01:00:59,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:00:59,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346850276] [2021-11-07 01:00:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:00:59,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:00:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:00:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 132 proven. 60 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-07 01:00:59,637 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:00:59,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346850276] [2021-11-07 01:00:59,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346850276] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:00:59,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67706252] [2021-11-07 01:00:59,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:00:59,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:00:59,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:00:59,639 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:00:59,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 01:01:00,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:01:00,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:01:00,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 01:01:00,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 241 proven. 25 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-11-07 01:01:00,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:01,127 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 181 proven. 60 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-07 01:01:01,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67706252] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:01,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [348735187] [2021-11-07 01:01:01,129 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2021-11-07 01:01:01,129 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:01,129 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:01:01,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:01,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 14] total 20 [2021-11-07 01:01:01,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499458242] [2021-11-07 01:01:01,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:01:01,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:01,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:01:01,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:01:01,132 INFO L87 Difference]: Start difference. First operand 509 states and 661 transitions. Second operand has 20 states, 20 states have (on average 4.85) internal successors, (97), 19 states have internal predecessors, (97), 9 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2021-11-07 01:01:02,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:02,798 INFO L93 Difference]: Finished difference Result 1820 states and 2924 transitions. [2021-11-07 01:01:02,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 01:01:02,799 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 19 states have internal predecessors, (97), 9 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) Word has length 120 [2021-11-07 01:01:02,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:02,828 INFO L225 Difference]: With dead ends: 1820 [2021-11-07 01:01:02,828 INFO L226 Difference]: Without dead ends: 1421 [2021-11-07 01:01:02,839 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=2063, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 01:01:02,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1421 states. [2021-11-07 01:01:02,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1421 to 1213. [2021-11-07 01:01:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 977 states have (on average 1.1924257932446265) internal successors, (1165), 941 states have internal predecessors, (1165), 159 states have call successors, (159), 33 states have call predecessors, (159), 73 states have return successors, (493), 238 states have call predecessors, (493), 155 states have call successors, (493) [2021-11-07 01:01:02,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1817 transitions. [2021-11-07 01:01:02,969 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1817 transitions. Word has length 120 [2021-11-07 01:01:02,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:02,969 INFO L470 AbstractCegarLoop]: Abstraction has 1213 states and 1817 transitions. [2021-11-07 01:01:02,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 19 states have internal predecessors, (97), 9 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (12), 7 states have call predecessors, (12), 8 states have call successors, (12) [2021-11-07 01:01:02,970 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1817 transitions. [2021-11-07 01:01:02,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 01:01:02,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:02,973 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 1, 1, 1, 1, 1] [2021-11-07 01:01:03,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:03,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable387 [2021-11-07 01:01:03,189 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1713396979, now seen corresponding path program 3 times [2021-11-07 01:01:03,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:03,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755426734] [2021-11-07 01:01:03,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:03,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:03,424 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-07 01:01:03,424 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:03,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755426734] [2021-11-07 01:01:03,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755426734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:03,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319073627] [2021-11-07 01:01:03,425 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:01:03,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:03,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:03,427 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:03,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 01:01:04,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:01:04,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:01:04,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 01:01:04,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-07 01:01:04,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-07 01:01:04,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319073627] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:04,936 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [412919931] [2021-11-07 01:01:04,938 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 01:01:04,938 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:04,939 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:01:04,939 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:01:04,939 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:01:04,954 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:04,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 01:01:04,956 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-07 01:01:04,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 01:01:04,959 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-07 01:01:04,960 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:01:04,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:04,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:01:04,969 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:04,970 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:04,971 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:04,982 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:01:04,983 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:04,985 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:04,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:04,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:04,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:04,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:04,997 INFO L180 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-11-07 01:01:04,998 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:05,000 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:01:05,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,008 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:01:05,009 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,011 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:05,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:01:05,016 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,018 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:05,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,026 INFO L180 QuantifierPusher]: treesize reduction 29, result has 58.0 percent of original size [2021-11-07 01:01:05,028 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:05,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,041 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.8 percent of original size [2021-11-07 01:01:05,047 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-07 01:01:05,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,053 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,054 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,056 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:01:05,058 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,059 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,061 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:01:05,062 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:01:05,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,066 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-07 01:01:05,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,071 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,072 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,075 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:01:05,077 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,077 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,079 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:01:05,080 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:01:05,082 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,084 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-07 01:01:05,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,102 INFO L180 QuantifierPusher]: treesize reduction 37, result has 70.2 percent of original size [2021-11-07 01:01:05,106 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:01:05,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,117 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,121 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:01:05,123 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:01:05,125 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,127 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:01:05,128 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,130 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:05,131 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,134 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:01:05,135 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,137 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:05,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,145 INFO L180 QuantifierPusher]: treesize reduction 23, result has 63.5 percent of original size [2021-11-07 01:01:05,146 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:05,156 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:01:05,160 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:01:05,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,216 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,218 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,221 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:05,222 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,223 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,225 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,226 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,227 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:01:05,231 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,232 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,234 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:01:05,236 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:01:05,238 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:01:05,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,243 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,246 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:05,247 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,250 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,251 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,252 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:01:05,254 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,254 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,256 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:01:05,258 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:01:05,260 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:01:05,261 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,264 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:01:05,265 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,267 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,268 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,270 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:05,272 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,273 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,275 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,276 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,278 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:01:05,279 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:05,280 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,282 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:01:05,284 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:01:05,286 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:01:05,287 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:05,290 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:01:05,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:05,303 INFO L197 IcfgInterpreter]: Interpreting procedure parts with input of size 23 for LOIs [2021-11-07 01:01:05,306 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:01:05,962 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:01:05,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:05,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-11-07 01:01:05,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741863327] [2021-11-07 01:01:05,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-07 01:01:05,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-07 01:01:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=604, Invalid=2702, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 01:01:05,966 INFO L87 Difference]: Start difference. First operand 1213 states and 1817 transitions. Second operand has 46 states, 45 states have (on average 2.088888888888889) internal successors, (94), 46 states have internal predecessors, (94), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-07 01:01:06,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:06,612 INFO L93 Difference]: Finished difference Result 1690 states and 2557 transitions. [2021-11-07 01:01:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-07 01:01:06,612 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.088888888888889) internal successors, (94), 46 states have internal predecessors, (94), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Word has length 102 [2021-11-07 01:01:06,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:06,627 INFO L225 Difference]: With dead ends: 1690 [2021-11-07 01:01:06,627 INFO L226 Difference]: Without dead ends: 1689 [2021-11-07 01:01:06,631 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1847 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1385, Invalid=4935, Unknown=0, NotChecked=0, Total=6320 [2021-11-07 01:01:06,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2021-11-07 01:01:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1513. [2021-11-07 01:01:06,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1217 states have (on average 1.2037797863599013) internal successors, (1465), 1181 states have internal predecessors, (1465), 219 states have call successors, (219), 33 states have call predecessors, (219), 73 states have return successors, (637), 298 states have call predecessors, (637), 215 states have call successors, (637) [2021-11-07 01:01:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 2321 transitions. [2021-11-07 01:01:06,753 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 2321 transitions. Word has length 102 [2021-11-07 01:01:06,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:06,754 INFO L470 AbstractCegarLoop]: Abstraction has 1513 states and 2321 transitions. [2021-11-07 01:01:06,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.088888888888889) internal successors, (94), 46 states have internal predecessors, (94), 22 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-07 01:01:06,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 2321 transitions. [2021-11-07 01:01:06,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 01:01:06,758 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:06,758 INFO L513 BasicCegarLoop]: trace histogram [13, 11, 7, 6, 6, 6, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:06,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:06,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable388 [2021-11-07 01:01:06,984 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1925612090, now seen corresponding path program 1 times [2021-11-07 01:01:06,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:06,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056225491] [2021-11-07 01:01:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:06,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 89 proven. 76 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-07 01:01:07,073 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:07,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056225491] [2021-11-07 01:01:07,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056225491] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:07,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715202393] [2021-11-07 01:01:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:07,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:07,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:07,076 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:07,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 01:01:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:07,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:01:07,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:08,037 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 89 proven. 76 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-07 01:01:08,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 89 proven. 76 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-11-07 01:01:08,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715202393] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:08,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1910941045] [2021-11-07 01:01:08,425 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2021-11-07 01:01:08,425 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:08,425 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:01:08,426 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:08,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2021-11-07 01:01:08,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158553904] [2021-11-07 01:01:08,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:01:08,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:08,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:01:08,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:01:08,428 INFO L87 Difference]: Start difference. First operand 1513 states and 2321 transitions. Second operand has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-07 01:01:08,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:08,819 INFO L93 Difference]: Finished difference Result 2845 states and 4433 transitions. [2021-11-07 01:01:08,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 01:01:08,820 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) Word has length 124 [2021-11-07 01:01:08,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:08,834 INFO L225 Difference]: With dead ends: 2845 [2021-11-07 01:01:08,834 INFO L226 Difference]: Without dead ends: 1504 [2021-11-07 01:01:08,849 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 248 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:01:08,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1504 states. [2021-11-07 01:01:08,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1504 to 1494. [2021-11-07 01:01:08,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1201 states have (on average 1.20233139050791) internal successors, (1444), 1166 states have internal predecessors, (1444), 217 states have call successors, (217), 33 states have call predecessors, (217), 72 states have return successors, (633), 294 states have call predecessors, (633), 213 states have call successors, (633) [2021-11-07 01:01:08,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2294 transitions. [2021-11-07 01:01:08,993 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2294 transitions. Word has length 124 [2021-11-07 01:01:08,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:08,994 INFO L470 AbstractCegarLoop]: Abstraction has 1494 states and 2294 transitions. [2021-11-07 01:01:08,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.166666666666667) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 6 states have call predecessors, (8), 5 states have call successors, (8) [2021-11-07 01:01:08,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2294 transitions. [2021-11-07 01:01:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 01:01:08,998 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:08,998 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 7, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-07 01:01:09,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:09,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable443 [2021-11-07 01:01:09,224 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:09,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:09,225 INFO L85 PathProgramCache]: Analyzing trace with hash 824319772, now seen corresponding path program 2 times [2021-11-07 01:01:09,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:09,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574766841] [2021-11-07 01:01:09,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:09,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:09,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:09,329 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 57 proven. 69 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-11-07 01:01:09,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:09,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574766841] [2021-11-07 01:01:09,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574766841] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:09,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150839167] [2021-11-07 01:01:09,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:01:09,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:09,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:09,331 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:09,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 01:01:10,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 01:01:10,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:01:10,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:01:10,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:10,319 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-11-07 01:01:10,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-11-07 01:01:10,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150839167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:01:10,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:01:10,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [13] total 17 [2021-11-07 01:01:10,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487562186] [2021-11-07 01:01:10,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 01:01:10,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:10,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 01:01:10,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:01:10,556 INFO L87 Difference]: Start difference. First operand 1494 states and 2294 transitions. Second operand has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-07 01:01:10,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:10,678 INFO L93 Difference]: Finished difference Result 1497 states and 2296 transitions. [2021-11-07 01:01:10,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:01:10,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 124 [2021-11-07 01:01:10,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:10,694 INFO L225 Difference]: With dead ends: 1497 [2021-11-07 01:01:10,694 INFO L226 Difference]: Without dead ends: 1386 [2021-11-07 01:01:10,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:01:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-11-07 01:01:10,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1278. [2021-11-07 01:01:10,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 1025 states have (on average 1.1921951219512195) internal successors, (1222), 1007 states have internal predecessors, (1222), 179 states have call successors, (179), 33 states have call predecessors, (179), 70 states have return successors, (525), 237 states have call predecessors, (525), 179 states have call successors, (525) [2021-11-07 01:01:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1926 transitions. [2021-11-07 01:01:10,812 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1926 transitions. Word has length 124 [2021-11-07 01:01:10,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:10,813 INFO L470 AbstractCegarLoop]: Abstraction has 1278 states and 1926 transitions. [2021-11-07 01:01:10,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.0) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-07 01:01:10,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1926 transitions. [2021-11-07 01:01:10,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-07 01:01:10,818 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:10,819 INFO L513 BasicCegarLoop]: trace histogram [21, 18, 14, 9, 9, 8, 8, 8, 8, 8, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:10,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:11,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable444 [2021-11-07 01:01:11,040 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash -920466219, now seen corresponding path program 1 times [2021-11-07 01:01:11,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:11,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424503530] [2021-11-07 01:01:11,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:11,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:11,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 203 proven. 143 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2021-11-07 01:01:11,210 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:11,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424503530] [2021-11-07 01:01:11,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424503530] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:11,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553439551] [2021-11-07 01:01:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:11,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:11,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:11,216 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:11,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 01:01:12,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:12,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:01:12,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 275 proven. 137 refuted. 0 times theorem prover too weak. 709 trivial. 0 not checked. [2021-11-07 01:01:12,776 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:13,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 203 proven. 143 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2021-11-07 01:01:13,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553439551] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:13,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1831043591] [2021-11-07 01:01:13,246 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:01:13,246 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:13,246 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:01:13,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:13,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 23 [2021-11-07 01:01:13,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526483292] [2021-11-07 01:01:13,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:01:13,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:13,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:01:13,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:01:13,250 INFO L87 Difference]: Start difference. First operand 1278 states and 1926 transitions. Second operand has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 12 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-11-07 01:01:14,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:14,057 INFO L93 Difference]: Finished difference Result 2787 states and 4985 transitions. [2021-11-07 01:01:14,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 01:01:14,058 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 12 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 205 [2021-11-07 01:01:14,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:14,076 INFO L225 Difference]: With dead ends: 2787 [2021-11-07 01:01:14,076 INFO L226 Difference]: Without dead ends: 1814 [2021-11-07 01:01:14,094 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 405 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 520 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=383, Invalid=1873, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 01:01:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2021-11-07 01:01:14,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1755. [2021-11-07 01:01:14,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1408 states have (on average 1.2052556818181819) internal successors, (1697), 1379 states have internal predecessors, (1697), 259 states have call successors, (259), 43 states have call predecessors, (259), 84 states have return successors, (730), 332 states have call predecessors, (730), 259 states have call successors, (730) [2021-11-07 01:01:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2686 transitions. [2021-11-07 01:01:14,254 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2686 transitions. Word has length 205 [2021-11-07 01:01:14,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:14,254 INFO L470 AbstractCegarLoop]: Abstraction has 1755 states and 2686 transitions. [2021-11-07 01:01:14,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.5217391304347827) internal successors, (81), 20 states have internal predecessors, (81), 12 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-11-07 01:01:14,255 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2686 transitions. [2021-11-07 01:01:14,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-07 01:01:14,259 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:14,259 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 12, 9, 9, 8, 8, 8, 8, 8, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:14,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:14,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable445,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:14,484 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1623263679, now seen corresponding path program 1 times [2021-11-07 01:01:14,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:14,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298623113] [2021-11-07 01:01:14,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:14,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:14,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 272 proven. 111 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2021-11-07 01:01:14,631 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:14,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298623113] [2021-11-07 01:01:14,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298623113] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:14,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998855658] [2021-11-07 01:01:14,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:14,631 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:14,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:14,635 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:14,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 01:01:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:15,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 01:01:15,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:16,257 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 608 proven. 10 refuted. 0 times theorem prover too weak. 461 trivial. 0 not checked. [2021-11-07 01:01:16,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 272 proven. 111 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2021-11-07 01:01:16,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998855658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:16,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1554607636] [2021-11-07 01:01:16,915 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:01:16,915 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:16,916 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:01:16,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:16,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 20 [2021-11-07 01:01:16,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629219407] [2021-11-07 01:01:16,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 01:01:16,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:16,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 01:01:16,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:01:16,919 INFO L87 Difference]: Start difference. First operand 1755 states and 2686 transitions. Second operand has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 12 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 12 states have call successors, (17) [2021-11-07 01:01:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:17,377 INFO L93 Difference]: Finished difference Result 3237 states and 5263 transitions. [2021-11-07 01:01:17,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:01:17,378 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 12 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 12 states have call successors, (17) Word has length 201 [2021-11-07 01:01:17,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:17,396 INFO L225 Difference]: With dead ends: 3237 [2021-11-07 01:01:17,397 INFO L226 Difference]: Without dead ends: 1916 [2021-11-07 01:01:17,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 395 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:01:17,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2021-11-07 01:01:17,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1760. [2021-11-07 01:01:17,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1413 states have (on average 1.2073602264685068) internal successors, (1706), 1382 states have internal predecessors, (1706), 259 states have call successors, (259), 42 states have call predecessors, (259), 84 states have return successors, (748), 335 states have call predecessors, (748), 259 states have call successors, (748) [2021-11-07 01:01:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2713 transitions. [2021-11-07 01:01:17,607 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2713 transitions. Word has length 201 [2021-11-07 01:01:17,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:17,608 INFO L470 AbstractCegarLoop]: Abstraction has 1760 states and 2713 transitions. [2021-11-07 01:01:17,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.9) internal successors, (98), 20 states have internal predecessors, (98), 12 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 7 states have call predecessors, (17), 12 states have call successors, (17) [2021-11-07 01:01:17,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2713 transitions. [2021-11-07 01:01:17,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-07 01:01:17,613 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:17,613 INFO L513 BasicCegarLoop]: trace histogram [23, 19, 15, 9, 9, 9, 8, 8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:17,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:17,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable446 [2021-11-07 01:01:17,828 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:17,829 INFO L85 PathProgramCache]: Analyzing trace with hash -2108402518, now seen corresponding path program 2 times [2021-11-07 01:01:17,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:17,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566143321] [2021-11-07 01:01:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:17,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 321 proven. 101 refuted. 0 times theorem prover too weak. 863 trivial. 0 not checked. [2021-11-07 01:01:18,023 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:18,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566143321] [2021-11-07 01:01:18,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566143321] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:18,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082131839] [2021-11-07 01:01:18,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:01:18,024 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:18,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:18,025 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:18,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 01:01:19,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 01:01:19,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:01:19,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:01:19,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:19,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2021-11-07 01:01:19,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:20,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1285 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 1186 trivial. 0 not checked. [2021-11-07 01:01:20,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082131839] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:20,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [190716412] [2021-11-07 01:01:20,069 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:01:20,070 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:20,070 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:01:20,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:20,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 4, 4] total 19 [2021-11-07 01:01:20,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746332172] [2021-11-07 01:01:20,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:01:20,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:20,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:01:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:01:20,073 INFO L87 Difference]: Start difference. First operand 1760 states and 2713 transitions. Second operand has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 16 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-11-07 01:01:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:20,890 INFO L93 Difference]: Finished difference Result 3602 states and 6074 transitions. [2021-11-07 01:01:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 01:01:20,890 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 16 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) Word has length 218 [2021-11-07 01:01:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:20,916 INFO L225 Difference]: With dead ends: 3602 [2021-11-07 01:01:20,916 INFO L226 Difference]: Without dead ends: 2122 [2021-11-07 01:01:20,931 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=224, Invalid=1258, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 01:01:20,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2122 states. [2021-11-07 01:01:21,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2122 to 1970. [2021-11-07 01:01:21,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1970 states, 1587 states have (on average 1.1991178323881537) internal successors, (1903), 1552 states have internal predecessors, (1903), 280 states have call successors, (280), 46 states have call predecessors, (280), 99 states have return successors, (831), 371 states have call predecessors, (831), 280 states have call successors, (831) [2021-11-07 01:01:21,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1970 states to 1970 states and 3014 transitions. [2021-11-07 01:01:21,098 INFO L78 Accepts]: Start accepts. Automaton has 1970 states and 3014 transitions. Word has length 218 [2021-11-07 01:01:21,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:21,099 INFO L470 AbstractCegarLoop]: Abstraction has 1970 states and 3014 transitions. [2021-11-07 01:01:21,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 16 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-11-07 01:01:21,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1970 states and 3014 transitions. [2021-11-07 01:01:21,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 01:01:21,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:21,104 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1] [2021-11-07 01:01:21,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:21,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable447 [2021-11-07 01:01:21,332 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:21,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1249966669, now seen corresponding path program 4 times [2021-11-07 01:01:21,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:21,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045222129] [2021-11-07 01:01:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:21,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2021-11-07 01:01:22,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:22,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045222129] [2021-11-07 01:01:22,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045222129] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:22,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930258406] [2021-11-07 01:01:22,130 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:01:22,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:22,131 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:22,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 01:01:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:23,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-07 01:01:23,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2021-11-07 01:01:23,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2255 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 1012 trivial. 0 not checked. [2021-11-07 01:01:25,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930258406] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:25,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [831797794] [2021-11-07 01:01:25,890 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 01:01:25,890 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:25,890 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:01:25,890 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:01:25,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:01:25,904 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:25,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 01:01:25,905 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-07 01:01:25,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 01:01:25,908 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-07 01:01:25,908 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:01:25,912 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:25,914 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:01:25,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:25,917 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:25,918 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:25,931 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:01:25,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:25,933 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:25,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:25,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:25,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:25,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:25,942 INFO L180 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-11-07 01:01:25,943 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:25,946 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:25,947 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:01:25,949 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:25,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:01:25,957 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:25,959 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:25,960 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:25,963 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:01:25,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:25,966 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:25,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:25,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:25,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:25,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:25,975 INFO L180 QuantifierPusher]: treesize reduction 29, result has 58.0 percent of original size [2021-11-07 01:01:25,976 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:25,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,018 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.8 percent of original size [2021-11-07 01:01:26,023 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:01:26,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,029 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:01:26,033 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,034 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,036 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:01:26,037 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:01:26,038 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,040 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-07 01:01:26,042 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,045 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,046 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,048 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:01:26,049 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,050 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,052 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:01:26,053 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:01:26,055 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,057 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-07 01:01:26,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,075 INFO L180 QuantifierPusher]: treesize reduction 26, result has 77.6 percent of original size [2021-11-07 01:01:26,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-07 01:01:26,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,093 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:01:26,095 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:01:26,097 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,100 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:01:26,101 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,103 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:26,104 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,107 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:01:26,108 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,110 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:01:26,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,118 INFO L180 QuantifierPusher]: treesize reduction 23, result has 63.5 percent of original size [2021-11-07 01:01:26,119 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:26,123 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:01:26,125 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:01:26,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,179 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,181 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,182 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:26,186 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,189 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,190 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,192 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:01:26,193 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,194 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,196 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:01:26,198 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:01:26,201 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:01:26,203 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,204 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,205 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,207 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:26,209 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,210 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,212 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,215 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:01:26,217 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,217 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,219 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:01:26,221 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:01:26,223 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:01:26,225 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,228 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:01:26,229 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,230 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,232 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:01:26,233 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,234 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,235 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,238 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:01:26,239 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:01:26,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,243 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:01:26,245 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:01:26,247 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:01:26,248 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:01:26,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:01:26,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:01:26,267 INFO L197 IcfgInterpreter]: Interpreting procedure parts with input of size 23 for LOIs [2021-11-07 01:01:26,271 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:01:26,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:01:26,999 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:26,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2021-11-07 01:01:26,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871065436] [2021-11-07 01:01:27,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-07 01:01:27,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:27,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-07 01:01:27,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2308, Invalid=8822, Unknown=0, NotChecked=0, Total=11130 [2021-11-07 01:01:27,004 INFO L87 Difference]: Start difference. First operand 1970 states and 3014 transitions. Second operand has 94 states, 93 states have (on average 2.043010752688172) internal successors, (190), 94 states have internal predecessors, (190), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-07 01:01:28,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:28,931 INFO L93 Difference]: Finished difference Result 3455 states and 5434 transitions. [2021-11-07 01:01:28,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-11-07 01:01:28,932 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.043010752688172) internal successors, (190), 94 states have internal predecessors, (190), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) Word has length 210 [2021-11-07 01:01:28,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:28,976 INFO L225 Difference]: With dead ends: 3455 [2021-11-07 01:01:28,976 INFO L226 Difference]: Without dead ends: 3454 [2021-11-07 01:01:28,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 721 GetRequests, 571 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6071 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5597, Invalid=17355, Unknown=0, NotChecked=0, Total=22952 [2021-11-07 01:01:28,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3454 states. [2021-11-07 01:01:29,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3454 to 2930. [2021-11-07 01:01:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2930 states, 2355 states have (on average 1.2157112526539278) internal successors, (2863), 2320 states have internal predecessors, (2863), 472 states have call successors, (472), 46 states have call predecessors, (472), 99 states have return successors, (1383), 563 states have call predecessors, (1383), 472 states have call successors, (1383) [2021-11-07 01:01:29,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4718 transitions. [2021-11-07 01:01:29,287 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4718 transitions. Word has length 210 [2021-11-07 01:01:29,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:29,288 INFO L470 AbstractCegarLoop]: Abstraction has 2930 states and 4718 transitions. [2021-11-07 01:01:29,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.043010752688172) internal successors, (190), 94 states have internal predecessors, (190), 46 states have call successors, (46), 1 states have call predecessors, (46), 1 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-11-07 01:01:29,289 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4718 transitions. [2021-11-07 01:01:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-07 01:01:29,292 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:29,292 INFO L513 BasicCegarLoop]: trace histogram [23, 19, 15, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:29,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:29,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable448,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:29,520 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:29,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash 100030215, now seen corresponding path program 3 times [2021-11-07 01:01:29,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:29,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508188900] [2021-11-07 01:01:29,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:29,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 374 proven. 23 refuted. 0 times theorem prover too weak. 904 trivial. 0 not checked. [2021-11-07 01:01:29,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:29,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508188900] [2021-11-07 01:01:29,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508188900] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:29,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750717785] [2021-11-07 01:01:29,661 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:01:29,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:29,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:29,663 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:29,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 01:01:30,922 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:01:30,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:01:30,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 01:01:30,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:31,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 581 proven. 107 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2021-11-07 01:01:31,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:32,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1301 backedges. 495 proven. 136 refuted. 0 times theorem prover too weak. 670 trivial. 0 not checked. [2021-11-07 01:01:32,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750717785] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:32,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649054971] [2021-11-07 01:01:32,841 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:01:32,841 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:32,842 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:01:32,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:32,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 17] total 29 [2021-11-07 01:01:32,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540382117] [2021-11-07 01:01:32,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 01:01:32,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 01:01:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2021-11-07 01:01:32,845 INFO L87 Difference]: Start difference. First operand 2930 states and 4718 transitions. Second operand has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 27 states have internal predecessors, (133), 15 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (17), 11 states have call predecessors, (17), 12 states have call successors, (17) [2021-11-07 01:01:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:36,612 INFO L93 Difference]: Finished difference Result 13243 states and 32616 transitions. [2021-11-07 01:01:36,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-07 01:01:36,612 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 27 states have internal predecessors, (133), 15 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (17), 11 states have call predecessors, (17), 12 states have call successors, (17) Word has length 220 [2021-11-07 01:01:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:36,714 INFO L225 Difference]: With dead ends: 13243 [2021-11-07 01:01:36,714 INFO L226 Difference]: Without dead ends: 10848 [2021-11-07 01:01:36,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2279 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1663, Invalid=6893, Unknown=0, NotChecked=0, Total=8556 [2021-11-07 01:01:36,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10848 states. [2021-11-07 01:01:37,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10848 to 8511. [2021-11-07 01:01:37,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8511 states, 6846 states have (on average 1.2278702892199824) internal successors, (8406), 6704 states have internal predecessors, (8406), 1281 states have call successors, (1281), 101 states have call predecessors, (1281), 380 states have return successors, (9607), 1705 states have call predecessors, (9607), 1281 states have call successors, (9607) [2021-11-07 01:01:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8511 states to 8511 states and 19294 transitions. [2021-11-07 01:01:38,028 INFO L78 Accepts]: Start accepts. Automaton has 8511 states and 19294 transitions. Word has length 220 [2021-11-07 01:01:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:38,028 INFO L470 AbstractCegarLoop]: Abstraction has 8511 states and 19294 transitions. [2021-11-07 01:01:38,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 4.586206896551724) internal successors, (133), 27 states have internal predecessors, (133), 15 states have call successors, (21), 5 states have call predecessors, (21), 7 states have return successors, (17), 11 states have call predecessors, (17), 12 states have call successors, (17) [2021-11-07 01:01:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 8511 states and 19294 transitions. [2021-11-07 01:01:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-07 01:01:38,031 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:38,032 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 14, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:38,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:38,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable503 [2021-11-07 01:01:38,233 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:38,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:38,233 INFO L85 PathProgramCache]: Analyzing trace with hash 876146818, now seen corresponding path program 2 times [2021-11-07 01:01:38,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:38,234 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911641533] [2021-11-07 01:01:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:38,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 311 proven. 113 refuted. 0 times theorem prover too weak. 895 trivial. 0 not checked. [2021-11-07 01:01:38,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:38,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911641533] [2021-11-07 01:01:38,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911641533] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:38,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926713637] [2021-11-07 01:01:38,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:01:38,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:38,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:38,480 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:38,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 01:01:40,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-07 01:01:40,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:01:40,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:01:40,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 404 proven. 27 refuted. 0 times theorem prover too weak. 888 trivial. 0 not checked. [2021-11-07 01:01:40,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:41,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1319 backedges. 404 proven. 28 refuted. 0 times theorem prover too weak. 887 trivial. 0 not checked. [2021-11-07 01:01:41,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926713637] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:41,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [147950791] [2021-11-07 01:01:41,415 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:01:41,415 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:41,415 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:01:41,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:41,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 34 [2021-11-07 01:01:41,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032730119] [2021-11-07 01:01:41,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 01:01:41,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:41,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 01:01:41,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1030, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 01:01:41,424 INFO L87 Difference]: Start difference. First operand 8511 states and 19294 transitions. Second operand has 34 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 32 states have internal predecessors, (131), 17 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2021-11-07 01:01:44,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:44,256 INFO L93 Difference]: Finished difference Result 10724 states and 26342 transitions. [2021-11-07 01:01:44,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-07 01:01:44,257 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 32 states have internal predecessors, (131), 17 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) Word has length 222 [2021-11-07 01:01:44,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:44,305 INFO L225 Difference]: With dead ends: 10724 [2021-11-07 01:01:44,318 INFO L226 Difference]: Without dead ends: 2715 [2021-11-07 01:01:44,442 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 441 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=808, Invalid=6164, Unknown=0, NotChecked=0, Total=6972 [2021-11-07 01:01:44,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2021-11-07 01:01:44,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2467. [2021-11-07 01:01:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 1977 states have (on average 1.2018209408194234) internal successors, (2376), 1952 states have internal predecessors, (2376), 375 states have call successors, (375), 57 states have call predecessors, (375), 111 states have return successors, (772), 457 states have call predecessors, (772), 375 states have call successors, (772) [2021-11-07 01:01:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 3523 transitions. [2021-11-07 01:01:44,675 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 3523 transitions. Word has length 222 [2021-11-07 01:01:44,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:44,675 INFO L470 AbstractCegarLoop]: Abstraction has 2467 states and 3523 transitions. [2021-11-07 01:01:44,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.8529411764705883) internal successors, (131), 32 states have internal predecessors, (131), 17 states have call successors, (22), 3 states have call predecessors, (22), 5 states have return successors, (20), 14 states have call predecessors, (20), 15 states have call successors, (20) [2021-11-07 01:01:44,676 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 3523 transitions. [2021-11-07 01:01:44,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-07 01:01:44,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:44,682 INFO L513 BasicCegarLoop]: trace histogram [26, 23, 17, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:44,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:44,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable504,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:44,905 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:44,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:44,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1803825984, now seen corresponding path program 3 times [2021-11-07 01:01:44,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:44,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545648509] [2021-11-07 01:01:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:44,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 390 proven. 162 refuted. 0 times theorem prover too weak. 1192 trivial. 0 not checked. [2021-11-07 01:01:45,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:45,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545648509] [2021-11-07 01:01:45,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545648509] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:45,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049442186] [2021-11-07 01:01:45,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:01:45,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:45,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:45,176 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:45,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 01:01:47,016 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:01:47,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:01:47,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:01:47,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:47,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 698 proven. 2 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked. [2021-11-07 01:01:47,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1744 backedges. 284 proven. 59 refuted. 0 times theorem prover too weak. 1401 trivial. 0 not checked. [2021-11-07 01:01:48,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049442186] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:48,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1531355727] [2021-11-07 01:01:48,070 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:01:48,070 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:48,071 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:01:48,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:48,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7, 7] total 19 [2021-11-07 01:01:48,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741462596] [2021-11-07 01:01:48,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:01:48,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:48,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:01:48,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:01:48,075 INFO L87 Difference]: Start difference. First operand 2467 states and 3523 transitions. Second operand has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 17 states have internal predecessors, (92), 9 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-07 01:01:48,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:48,730 INFO L93 Difference]: Finished difference Result 3329 states and 4969 transitions. [2021-11-07 01:01:48,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 01:01:48,731 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 17 states have internal predecessors, (92), 9 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) Word has length 253 [2021-11-07 01:01:48,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:48,744 INFO L225 Difference]: With dead ends: 3329 [2021-11-07 01:01:48,744 INFO L226 Difference]: Without dead ends: 2472 [2021-11-07 01:01:48,750 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 506 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=1064, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 01:01:48,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2021-11-07 01:01:48,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2436. [2021-11-07 01:01:48,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2436 states, 1952 states have (on average 1.2028688524590163) internal successors, (2348), 1928 states have internal predecessors, (2348), 370 states have call successors, (370), 56 states have call predecessors, (370), 110 states have return successors, (748), 451 states have call predecessors, (748), 370 states have call successors, (748) [2021-11-07 01:01:48,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2436 states to 2436 states and 3466 transitions. [2021-11-07 01:01:48,924 INFO L78 Accepts]: Start accepts. Automaton has 2436 states and 3466 transitions. Word has length 253 [2021-11-07 01:01:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:48,925 INFO L470 AbstractCegarLoop]: Abstraction has 2436 states and 3466 transitions. [2021-11-07 01:01:48,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.842105263157895) internal successors, (92), 17 states have internal predecessors, (92), 9 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (14), 7 states have call predecessors, (14), 8 states have call successors, (14) [2021-11-07 01:01:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2436 states and 3466 transitions. [2021-11-07 01:01:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-07 01:01:48,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:48,929 INFO L513 BasicCegarLoop]: trace histogram [24, 22, 17, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:48,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-11-07 01:01:49,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable505,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:49,156 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:49,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1352765488, now seen corresponding path program 4 times [2021-11-07 01:01:49,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:49,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737832433] [2021-11-07 01:01:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:49,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:49,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 120 proven. 20 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2021-11-07 01:01:49,252 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:49,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737832433] [2021-11-07 01:01:49,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737832433] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:49,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324855243] [2021-11-07 01:01:49,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:01:49,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:49,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:49,254 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:49,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 01:01:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:50,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 01:01:50,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:51,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 457 proven. 0 refuted. 0 times theorem prover too weak. 1088 trivial. 0 not checked. [2021-11-07 01:01:51,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:51,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1545 backedges. 120 proven. 20 refuted. 0 times theorem prover too weak. 1405 trivial. 0 not checked. [2021-11-07 01:01:51,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324855243] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:51,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2021-11-07 01:01:51,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 6 [2021-11-07 01:01:51,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363655802] [2021-11-07 01:01:51,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:01:51,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:01:51,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:01:51,964 INFO L87 Difference]: Start difference. First operand 2436 states and 3466 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-07 01:01:52,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:52,125 INFO L93 Difference]: Finished difference Result 4096 states and 6364 transitions. [2021-11-07 01:01:52,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:01:52,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 239 [2021-11-07 01:01:52,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:52,136 INFO L225 Difference]: With dead ends: 4096 [2021-11-07 01:01:52,136 INFO L226 Difference]: Without dead ends: 2238 [2021-11-07 01:01:52,149 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 475 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:01:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2021-11-07 01:01:52,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2234. [2021-11-07 01:01:52,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2234 states, 1783 states have (on average 1.1991026360067303) internal successors, (2138), 1777 states have internal predecessors, (2138), 353 states have call successors, (353), 56 states have call predecessors, (353), 94 states have return successors, (623), 400 states have call predecessors, (623), 353 states have call successors, (623) [2021-11-07 01:01:52,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 3114 transitions. [2021-11-07 01:01:52,379 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 3114 transitions. Word has length 239 [2021-11-07 01:01:52,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:52,380 INFO L470 AbstractCegarLoop]: Abstraction has 2234 states and 3114 transitions. [2021-11-07 01:01:52,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2021-11-07 01:01:52,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 3114 transitions. [2021-11-07 01:01:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-11-07 01:01:52,384 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:52,384 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 16, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:52,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:52,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable506 [2021-11-07 01:01:52,599 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:52,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:52,600 INFO L85 PathProgramCache]: Analyzing trace with hash 248829725, now seen corresponding path program 5 times [2021-11-07 01:01:52,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:52,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313340307] [2021-11-07 01:01:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:52,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:52,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1590 backedges. 294 proven. 10 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2021-11-07 01:01:52,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:52,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313340307] [2021-11-07 01:01:52,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313340307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:52,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633690940] [2021-11-07 01:01:52,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:01:52,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:52,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:52,721 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:52,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 01:01:54,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-07 01:01:54,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:01:54,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 01:01:54,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1590 backedges. 294 proven. 10 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2021-11-07 01:01:55,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:01:55,999 INFO L134 CoverageAnalysis]: Checked inductivity of 1590 backedges. 308 proven. 10 refuted. 0 times theorem prover too weak. 1272 trivial. 0 not checked. [2021-11-07 01:01:55,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633690940] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:01:55,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1658811909] [2021-11-07 01:01:56,001 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:01:56,001 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:01:56,002 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:01:56,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:01:56,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8] total 11 [2021-11-07 01:01:56,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293459753] [2021-11-07 01:01:56,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:01:56,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:01:56,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:01:56,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:01:56,005 INFO L87 Difference]: Start difference. First operand 2234 states and 3114 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (11), 8 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-07 01:01:56,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:01:56,190 INFO L93 Difference]: Finished difference Result 3222 states and 5171 transitions. [2021-11-07 01:01:56,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 01:01:56,191 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (11), 8 states have call predecessors, (11), 3 states have call successors, (11) Word has length 243 [2021-11-07 01:01:56,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:01:56,208 INFO L225 Difference]: With dead ends: 3222 [2021-11-07 01:01:56,208 INFO L226 Difference]: Without dead ends: 3221 [2021-11-07 01:01:56,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:01:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2021-11-07 01:01:56,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 2820. [2021-11-07 01:01:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2820 states, 2254 states have (on average 1.168145519077196) internal successors, (2633), 2207 states have internal predecessors, (2633), 422 states have call successors, (422), 56 states have call predecessors, (422), 140 states have return successors, (1254), 556 states have call predecessors, (1254), 422 states have call successors, (1254) [2021-11-07 01:01:56,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2820 states to 2820 states and 4309 transitions. [2021-11-07 01:01:56,426 INFO L78 Accepts]: Start accepts. Automaton has 2820 states and 4309 transitions. Word has length 243 [2021-11-07 01:01:56,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:01:56,427 INFO L470 AbstractCegarLoop]: Abstraction has 2820 states and 4309 transitions. [2021-11-07 01:01:56,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (11), 8 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-07 01:01:56,427 INFO L276 IsEmpty]: Start isEmpty. Operand 2820 states and 4309 transitions. [2021-11-07 01:01:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-07 01:01:56,431 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:01:56,431 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 16, 9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:01:56,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-07 01:01:56,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable507 [2021-11-07 01:01:56,652 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting partsErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:01:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:01:56,652 INFO L85 PathProgramCache]: Analyzing trace with hash -876213057, now seen corresponding path program 1 times [2021-11-07 01:01:56,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:01:56,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927942044] [2021-11-07 01:01:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:56,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:01:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 300 proven. 10 refuted. 0 times theorem prover too weak. 1286 trivial. 0 not checked. [2021-11-07 01:01:56,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:01:56,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927942044] [2021-11-07 01:01:56,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927942044] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:01:56,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993736455] [2021-11-07 01:01:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:01:56,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:01:56,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:01:56,902 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:01:56,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 01:01:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:01:58,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 01:01:58,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:01:59,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 261 proven. 26 refuted. 0 times theorem prover too weak. 1309 trivial. 0 not checked. [2021-11-07 01:01:59,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 272 proven. 27 refuted. 0 times theorem prover too weak. 1297 trivial. 0 not checked. [2021-11-07 01:02:00,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993736455] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:00,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [681994645] [2021-11-07 01:02:00,130 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:02:00,131 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:02:00,131 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:02:00,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:02:00,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 10] total 14 [2021-11-07 01:02:00,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041764777] [2021-11-07 01:02:00,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:02:00,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:00,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:02:00,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:02:00,135 INFO L87 Difference]: Start difference. First operand 2820 states and 4309 transitions. Second operand has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-07 01:02:00,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:00,375 INFO L93 Difference]: Finished difference Result 3121 states and 5261 transitions. [2021-11-07 01:02:00,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:02:00,376 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 3 states have call successors, (12) Word has length 244 [2021-11-07 01:02:00,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:00,393 INFO L225 Difference]: With dead ends: 3121 [2021-11-07 01:02:00,393 INFO L226 Difference]: Without dead ends: 3120 [2021-11-07 01:02:00,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:02:00,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3120 states. [2021-11-07 01:02:00,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3120 to 2920. [2021-11-07 01:02:00,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2326 states have (on average 1.1521926053310405) internal successors, (2680), 2286 states have internal predecessors, (2680), 439 states have call successors, (439), 56 states have call predecessors, (439), 151 states have return successors, (1417), 577 states have call predecessors, (1417), 439 states have call successors, (1417) [2021-11-07 01:02:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 4536 transitions. [2021-11-07 01:02:00,687 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 4536 transitions. Word has length 244 [2021-11-07 01:02:00,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:00,689 INFO L470 AbstractCegarLoop]: Abstraction has 2920 states and 4536 transitions. [2021-11-07 01:02:00,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.428571428571429) internal successors, (62), 15 states have internal predecessors, (62), 3 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 3 states have call successors, (12) [2021-11-07 01:02:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 4536 transitions. [2021-11-07 01:02:00,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 01:02:00,694 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:00,695 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 19, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:00,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:00,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable508,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:00,908 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:02:00,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:00,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1858446441, now seen corresponding path program 6 times [2021-11-07 01:02:00,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:00,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414476129] [2021-11-07 01:02:00,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:00,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:01,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 566 proven. 133 refuted. 0 times theorem prover too weak. 1507 trivial. 0 not checked. [2021-11-07 01:02:01,075 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:01,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414476129] [2021-11-07 01:02:01,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414476129] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:02:01,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071231649] [2021-11-07 01:02:01,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:02:01,076 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:01,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:01,080 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:01,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 01:02:03,361 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:02:03,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:02:03,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 01:02:03,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:03,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 486 proven. 51 refuted. 0 times theorem prover too weak. 1669 trivial. 0 not checked. [2021-11-07 01:02:03,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 2206 backedges. 486 proven. 53 refuted. 0 times theorem prover too weak. 1667 trivial. 0 not checked. [2021-11-07 01:02:04,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071231649] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:04,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [120473382] [2021-11-07 01:02:04,943 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:02:04,943 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:02:04,943 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:02:04,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:02:04,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 18 [2021-11-07 01:02:04,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344260818] [2021-11-07 01:02:04,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 01:02:04,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:04,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 01:02:04,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-11-07 01:02:04,946 INFO L87 Difference]: Start difference. First operand 2920 states and 4536 transitions. Second operand has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 17 states have internal predecessors, (101), 10 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2021-11-07 01:02:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:05,471 INFO L93 Difference]: Finished difference Result 5727 states and 10196 transitions. [2021-11-07 01:02:05,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:02:05,471 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 17 states have internal predecessors, (101), 10 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) Word has length 284 [2021-11-07 01:02:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:05,491 INFO L225 Difference]: With dead ends: 5727 [2021-11-07 01:02:05,491 INFO L226 Difference]: Without dead ends: 3339 [2021-11-07 01:02:05,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 563 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=609, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:02:05,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3339 states. [2021-11-07 01:02:05,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3339 to 3162. [2021-11-07 01:02:05,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3162 states, 2520 states have (on average 1.142063492063492) internal successors, (2878), 2475 states have internal predecessors, (2878), 483 states have call successors, (483), 78 states have call predecessors, (483), 155 states have return successors, (1235), 608 states have call predecessors, (1235), 476 states have call successors, (1235) [2021-11-07 01:02:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 4596 transitions. [2021-11-07 01:02:05,777 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 4596 transitions. Word has length 284 [2021-11-07 01:02:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:05,778 INFO L470 AbstractCegarLoop]: Abstraction has 3162 states and 4596 transitions. [2021-11-07 01:02:05,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.611111111111111) internal successors, (101), 17 states have internal predecessors, (101), 10 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2021-11-07 01:02:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 4596 transitions. [2021-11-07 01:02:05,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-11-07 01:02:05,788 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:05,789 INFO L513 BasicCegarLoop]: trace histogram [42, 40, 31, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 14, 14, 14, 11, 9, 9, 8, 8, 8, 8, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:02:05,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:06,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable509,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:06,004 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:02:06,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:06,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1552717243, now seen corresponding path program 7 times [2021-11-07 01:02:06,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:06,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835417654] [2021-11-07 01:02:06,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:06,005 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5204 backedges. 503 proven. 674 refuted. 0 times theorem prover too weak. 4027 trivial. 0 not checked. [2021-11-07 01:02:06,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:06,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835417654] [2021-11-07 01:02:06,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835417654] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:02:06,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798786218] [2021-11-07 01:02:06,246 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:02:06,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:06,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:06,248 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:06,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-07 01:02:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:08,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:02:08,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5204 backedges. 2327 proven. 396 refuted. 0 times theorem prover too weak. 2481 trivial. 0 not checked. [2021-11-07 01:02:09,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:10,676 INFO L134 CoverageAnalysis]: Checked inductivity of 5204 backedges. 503 proven. 675 refuted. 0 times theorem prover too weak. 4026 trivial. 0 not checked. [2021-11-07 01:02:10,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798786218] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:10,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1698067736] [2021-11-07 01:02:10,678 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:02:10,679 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:02:10,679 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:02:10,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:02:10,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 15] total 19 [2021-11-07 01:02:10,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90974739] [2021-11-07 01:02:10,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 01:02:10,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:10,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 01:02:10,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:02:10,692 INFO L87 Difference]: Start difference. First operand 3162 states and 4596 transitions. Second operand has 19 states, 19 states have (on average 5.842105263157895) internal successors, (111), 18 states have internal predecessors, (111), 13 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 8 states have call predecessors, (18), 13 states have call successors, (18) [2021-11-07 01:02:11,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:11,239 INFO L93 Difference]: Finished difference Result 6134 states and 9156 transitions. [2021-11-07 01:02:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 01:02:11,239 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.842105263157895) internal successors, (111), 18 states have internal predecessors, (111), 13 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 8 states have call predecessors, (18), 13 states have call successors, (18) Word has length 424 [2021-11-07 01:02:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:11,252 INFO L225 Difference]: With dead ends: 6134 [2021-11-07 01:02:11,252 INFO L226 Difference]: Without dead ends: 3386 [2021-11-07 01:02:11,269 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 844 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2021-11-07 01:02:11,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2021-11-07 01:02:11,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 3318. [2021-11-07 01:02:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3318 states, 2644 states have (on average 1.1369137670196672) internal successors, (3006), 2602 states have internal predecessors, (3006), 497 states have call successors, (497), 93 states have call predecessors, (497), 173 states have return successors, (1249), 622 states have call predecessors, (1249), 490 states have call successors, (1249) [2021-11-07 01:02:11,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3318 states to 3318 states and 4752 transitions. [2021-11-07 01:02:11,577 INFO L78 Accepts]: Start accepts. Automaton has 3318 states and 4752 transitions. Word has length 424 [2021-11-07 01:02:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:11,578 INFO L470 AbstractCegarLoop]: Abstraction has 3318 states and 4752 transitions. [2021-11-07 01:02:11,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.842105263157895) internal successors, (111), 18 states have internal predecessors, (111), 13 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 8 states have call predecessors, (18), 13 states have call successors, (18) [2021-11-07 01:02:11,579 INFO L276 IsEmpty]: Start isEmpty. Operand 3318 states and 4752 transitions. [2021-11-07 01:02:11,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-07 01:02:11,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:11,587 INFO L513 BasicCegarLoop]: trace histogram [40, 39, 30, 15, 15, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 10, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-07 01:02:11,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:11,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable510 [2021-11-07 01:02:11,802 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:02:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:11,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1937134324, now seen corresponding path program 8 times [2021-11-07 01:02:11,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:11,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148081528] [2021-11-07 01:02:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:11,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4700 backedges. 370 proven. 162 refuted. 0 times theorem prover too weak. 4168 trivial. 0 not checked. [2021-11-07 01:02:12,068 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:12,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148081528] [2021-11-07 01:02:12,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148081528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:02:12,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278262006] [2021-11-07 01:02:12,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:02:12,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:12,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:12,070 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:12,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-07 01:02:14,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-07 01:02:14,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:02:14,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:02:14,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 4700 backedges. 1156 proven. 92 refuted. 0 times theorem prover too weak. 3452 trivial. 0 not checked. [2021-11-07 01:02:15,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4700 backedges. 1150 proven. 99 refuted. 0 times theorem prover too weak. 3451 trivial. 0 not checked. [2021-11-07 01:02:17,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278262006] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:17,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [844163252] [2021-11-07 01:02:17,531 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:02:17,532 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:02:17,532 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:02:17,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:02:17,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 21] total 41 [2021-11-07 01:02:17,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481773415] [2021-11-07 01:02:17,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-07 01:02:17,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:17,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-07 01:02:17,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1514, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 01:02:17,537 INFO L87 Difference]: Start difference. First operand 3318 states and 4752 transitions. Second operand has 41 states, 41 states have (on average 3.975609756097561) internal successors, (163), 40 states have internal predecessors, (163), 21 states have call successors, (27), 3 states have call predecessors, (27), 7 states have return successors, (25), 16 states have call predecessors, (25), 20 states have call successors, (25) [2021-11-07 01:02:20,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:20,935 INFO L93 Difference]: Finished difference Result 8988 states and 16948 transitions. [2021-11-07 01:02:20,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-07 01:02:20,935 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.975609756097561) internal successors, (163), 40 states have internal predecessors, (163), 21 states have call successors, (27), 3 states have call predecessors, (27), 7 states have return successors, (25), 16 states have call predecessors, (25), 20 states have call successors, (25) Word has length 409 [2021-11-07 01:02:20,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:20,962 INFO L225 Difference]: With dead ends: 8988 [2021-11-07 01:02:20,962 INFO L226 Difference]: Without dead ends: 6664 [2021-11-07 01:02:20,983 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 803 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1986 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1054, Invalid=8066, Unknown=0, NotChecked=0, Total=9120 [2021-11-07 01:02:20,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2021-11-07 01:02:21,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 5611. [2021-11-07 01:02:21,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5611 states, 4475 states have (on average 1.1275977653631284) internal successors, (5046), 4407 states have internal predecessors, (5046), 906 states have call successors, (906), 92 states have call predecessors, (906), 226 states have return successors, (2407), 1111 states have call predecessors, (2407), 899 states have call successors, (2407) [2021-11-07 01:02:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5611 states to 5611 states and 8359 transitions. [2021-11-07 01:02:21,542 INFO L78 Accepts]: Start accepts. Automaton has 5611 states and 8359 transitions. Word has length 409 [2021-11-07 01:02:21,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:21,543 INFO L470 AbstractCegarLoop]: Abstraction has 5611 states and 8359 transitions. [2021-11-07 01:02:21,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.975609756097561) internal successors, (163), 40 states have internal predecessors, (163), 21 states have call successors, (27), 3 states have call predecessors, (27), 7 states have return successors, (25), 16 states have call predecessors, (25), 20 states have call successors, (25) [2021-11-07 01:02:21,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5611 states and 8359 transitions. [2021-11-07 01:02:21,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2021-11-07 01:02:21,556 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:21,557 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 34, 18, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 13, 13, 13, 13, 13, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-07 01:02:21,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:21,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable511 [2021-11-07 01:02:21,784 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:02:21,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:21,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1109996476, now seen corresponding path program 9 times [2021-11-07 01:02:21,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:21,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273841346] [2021-11-07 01:02:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:21,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:22,094 INFO L134 CoverageAnalysis]: Checked inductivity of 6461 backedges. 376 proven. 298 refuted. 0 times theorem prover too weak. 5787 trivial. 0 not checked. [2021-11-07 01:02:22,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:22,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273841346] [2021-11-07 01:02:22,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273841346] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:02:22,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139771646] [2021-11-07 01:02:22,095 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:02:22,095 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:22,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:22,100 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:22,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-07 01:02:24,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:02:24,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:02:24,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 01:02:24,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6461 backedges. 2652 proven. 156 refuted. 0 times theorem prover too weak. 3653 trivial. 0 not checked. [2021-11-07 01:02:26,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6461 backedges. 994 proven. 405 refuted. 0 times theorem prover too weak. 5062 trivial. 0 not checked. [2021-11-07 01:02:27,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139771646] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:27,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [659153831] [2021-11-07 01:02:27,721 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:02:27,721 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:02:27,722 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:02:27,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:02:27,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 16] total 39 [2021-11-07 01:02:27,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456497600] [2021-11-07 01:02:27,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-07 01:02:27,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-07 01:02:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1352, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 01:02:27,726 INFO L87 Difference]: Start difference. First operand 5611 states and 8359 transitions. Second operand has 39 states, 39 states have (on average 4.230769230769231) internal successors, (165), 39 states have internal predecessors, (165), 20 states have call successors, (28), 3 states have call predecessors, (28), 9 states have return successors, (28), 17 states have call predecessors, (28), 19 states have call successors, (28) [2021-11-07 01:02:30,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:30,389 INFO L93 Difference]: Finished difference Result 10723 states and 19606 transitions. [2021-11-07 01:02:30,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-07 01:02:30,389 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.230769230769231) internal successors, (165), 39 states have internal predecessors, (165), 20 states have call successors, (28), 3 states have call predecessors, (28), 9 states have return successors, (28), 17 states have call predecessors, (28), 19 states have call successors, (28) Word has length 476 [2021-11-07 01:02:30,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:30,434 INFO L225 Difference]: With dead ends: 10723 [2021-11-07 01:02:30,435 INFO L226 Difference]: Without dead ends: 6339 [2021-11-07 01:02:30,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1027 GetRequests, 938 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1780 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=947, Invalid=7243, Unknown=0, NotChecked=0, Total=8190 [2021-11-07 01:02:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6339 states. [2021-11-07 01:02:30,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6339 to 5042. [2021-11-07 01:02:30,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5042 states, 4015 states have (on average 1.1217932752179327) internal successors, (4504), 3940 states have internal predecessors, (4504), 761 states have call successors, (761), 106 states have call predecessors, (761), 262 states have return successors, (2611), 995 states have call predecessors, (2611), 754 states have call successors, (2611) [2021-11-07 01:02:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5042 states to 5042 states and 7876 transitions. [2021-11-07 01:02:30,954 INFO L78 Accepts]: Start accepts. Automaton has 5042 states and 7876 transitions. Word has length 476 [2021-11-07 01:02:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:30,955 INFO L470 AbstractCegarLoop]: Abstraction has 5042 states and 7876 transitions. [2021-11-07 01:02:30,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.230769230769231) internal successors, (165), 39 states have internal predecessors, (165), 20 states have call successors, (28), 3 states have call predecessors, (28), 9 states have return successors, (28), 17 states have call predecessors, (28), 19 states have call successors, (28) [2021-11-07 01:02:30,956 INFO L276 IsEmpty]: Start isEmpty. Operand 5042 states and 7876 transitions. [2021-11-07 01:02:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-07 01:02:30,964 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:30,965 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 47, 47, 46, 46, 1, 1, 1, 1, 1] [2021-11-07 01:02:31,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:31,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable512 [2021-11-07 01:02:31,180 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:02:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:31,180 INFO L85 PathProgramCache]: Analyzing trace with hash -345765683, now seen corresponding path program 5 times [2021-11-07 01:02:31,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:31,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450130487] [2021-11-07 01:02:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:31,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9683 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2021-11-07 01:02:34,345 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:34,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450130487] [2021-11-07 01:02:34,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450130487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:02:34,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907701] [2021-11-07 01:02:34,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:02:34,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:34,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:34,348 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:34,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-07 01:02:37,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 47 check-sat command(s) [2021-11-07 01:02:37,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:02:37,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 1193 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-07 01:02:37,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:02:38,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9683 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2021-11-07 01:02:38,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:02:45,882 INFO L134 CoverageAnalysis]: Checked inductivity of 9683 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2021-11-07 01:02:45,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907701] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:02:45,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1343965922] [2021-11-07 01:02:45,884 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 01:02:45,884 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:02:45,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:02:45,885 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:02:45,885 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:02:45,900 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,901 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 01:02:45,903 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-07 01:02:45,904 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 01:02:45,905 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-07 01:02:45,906 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:02:45,909 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,912 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:02:45,914 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,915 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:02:45,916 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,919 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:02:45,920 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,922 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:02:45,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,929 INFO L180 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-11-07 01:02:45,930 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:02:45,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:02:45,934 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,936 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:02:45,937 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,938 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:02:45,939 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,941 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:02:45,944 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,946 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:02:45,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,955 INFO L180 QuantifierPusher]: treesize reduction 29, result has 58.0 percent of original size [2021-11-07 01:02:45,957 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:02:45,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:45,968 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.8 percent of original size [2021-11-07 01:02:45,974 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 81 [2021-11-07 01:02:45,976 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,978 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:45,979 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,985 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:02:45,986 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:45,987 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,989 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:02:45,990 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:02:45,994 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:45,996 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-07 01:02:45,997 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,002 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,003 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,005 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-11-07 01:02:46,006 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,007 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,009 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:02:46,010 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:02:46,013 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,015 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 87 [2021-11-07 01:02:46,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,040 INFO L180 QuantifierPusher]: treesize reduction 37, result has 70.2 percent of original size [2021-11-07 01:02:46,044 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:02:46,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,061 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:02:46,062 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:02:46,064 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,067 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:02:46,068 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,070 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:02:46,071 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,074 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:02:46,076 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,078 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:02:46,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,086 INFO L180 QuantifierPusher]: treesize reduction 23, result has 63.5 percent of original size [2021-11-07 01:02:46,088 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:02:46,091 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:02:46,093 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:02:46,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,151 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,152 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,153 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,155 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:02:46,157 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,158 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,160 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,160 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,163 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:02:46,165 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,166 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,167 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:02:46,169 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:02:46,171 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:02:46,173 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,175 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:02:46,179 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,181 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,182 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,183 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,185 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:02:46,186 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,187 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,189 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:02:46,191 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:02:46,193 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:02:46,195 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,197 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:02:46,199 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,200 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,201 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,203 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:02:46,206 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,207 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,208 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,209 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,211 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:02:46,212 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:02:46,213 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,214 INFO L185 QuantifierPusher]: treesize reduction 6, result has 75.0 percent of original size 18 [2021-11-07 01:02:46,216 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:02:46,218 INFO L185 QuantifierPusher]: treesize reduction 12, result has 84.0 percent of original size 63 [2021-11-07 01:02:46,220 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:02:46,222 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:02:46,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:02:46,234 INFO L197 IcfgInterpreter]: Interpreting procedure parts with input of size 23 for LOIs [2021-11-07 01:02:46,236 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:02:47,286 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:02:47,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:02:47,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2021-11-07 01:02:47,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774876446] [2021-11-07 01:02:47,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-11-07 01:02:47,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:02:47,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-11-07 01:02:47,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9172, Invalid=31430, Unknown=0, NotChecked=0, Total=40602 [2021-11-07 01:02:47,297 INFO L87 Difference]: Start difference. First operand 5042 states and 7876 transitions. Second operand has 190 states, 189 states have (on average 2.0211640211640214) internal successors, (382), 190 states have internal predecessors, (382), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2021-11-07 01:02:55,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:02:55,657 INFO L93 Difference]: Finished difference Result 8054 states and 12231 transitions. [2021-11-07 01:02:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-11-07 01:02:55,657 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 2.0211640211640214) internal successors, (382), 190 states have internal predecessors, (382), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) Word has length 426 [2021-11-07 01:02:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:02:55,687 INFO L225 Difference]: With dead ends: 8054 [2021-11-07 01:02:55,687 INFO L226 Difference]: Without dead ends: 8053 [2021-11-07 01:02:55,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1465 GetRequests, 1171 SyntacticMatches, 0 SemanticMatches, 294 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21431 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=22661, Invalid=64659, Unknown=0, NotChecked=0, Total=87320 [2021-11-07 01:02:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8053 states. [2021-11-07 01:02:56,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8053 to 6962. [2021-11-07 01:02:56,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6962 states, 5551 states have (on average 1.1486218699333453) internal successors, (6376), 5476 states have internal predecessors, (6376), 1145 states have call successors, (1145), 106 states have call predecessors, (1145), 262 states have return successors, (3235), 1379 states have call predecessors, (3235), 1138 states have call successors, (3235) [2021-11-07 01:02:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6962 states to 6962 states and 10756 transitions. [2021-11-07 01:02:56,174 INFO L78 Accepts]: Start accepts. Automaton has 6962 states and 10756 transitions. Word has length 426 [2021-11-07 01:02:56,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:02:56,174 INFO L470 AbstractCegarLoop]: Abstraction has 6962 states and 10756 transitions. [2021-11-07 01:02:56,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 2.0211640211640214) internal successors, (382), 190 states have internal predecessors, (382), 94 states have call successors, (94), 1 states have call predecessors, (94), 1 states have return successors, (94), 94 states have call predecessors, (94), 94 states have call successors, (94) [2021-11-07 01:02:56,175 INFO L276 IsEmpty]: Start isEmpty. Operand 6962 states and 10756 transitions. [2021-11-07 01:02:56,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2021-11-07 01:02:56,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:02:56,188 INFO L513 BasicCegarLoop]: trace histogram [60, 59, 44, 24, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 16, 15, 15, 14, 14, 14, 14, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-07 01:02:56,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-07 01:02:56,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable513,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:56,404 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:02:56,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:02:56,405 INFO L85 PathProgramCache]: Analyzing trace with hash 400808189, now seen corresponding path program 10 times [2021-11-07 01:02:56,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:02:56,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142516591] [2021-11-07 01:02:56,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:02:56,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:02:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:02:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 10813 backedges. 751 proven. 498 refuted. 0 times theorem prover too weak. 9564 trivial. 0 not checked. [2021-11-07 01:02:56,741 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:02:56,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142516591] [2021-11-07 01:02:56,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142516591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:02:56,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603190302] [2021-11-07 01:02:56,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:02:56,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:02:56,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:02:56,742 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:02:56,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-07 01:03:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:00,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:03:00,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:01,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10813 backedges. 5192 proven. 287 refuted. 0 times theorem prover too weak. 5334 trivial. 0 not checked. [2021-11-07 01:03:01,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 10813 backedges. 751 proven. 498 refuted. 0 times theorem prover too weak. 9564 trivial. 0 not checked. [2021-11-07 01:03:02,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603190302] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:02,844 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1860689858] [2021-11-07 01:03:02,845 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:03:02,846 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:03:02,846 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:03:02,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:03:02,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 25 [2021-11-07 01:03:02,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148416756] [2021-11-07 01:03:02,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 01:03:02,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:03:02,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 01:03:02,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2021-11-07 01:03:02,849 INFO L87 Difference]: Start difference. First operand 6962 states and 10756 transitions. Second operand has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 13 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 11 states have call predecessors, (22), 13 states have call successors, (22) [2021-11-07 01:03:03,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:03,713 INFO L93 Difference]: Finished difference Result 12311 states and 20065 transitions. [2021-11-07 01:03:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 01:03:03,713 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 13 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 11 states have call predecessors, (22), 13 states have call successors, (22) Word has length 609 [2021-11-07 01:03:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:03,744 INFO L225 Difference]: With dead ends: 12311 [2021-11-07 01:03:03,745 INFO L226 Difference]: Without dead ends: 6961 [2021-11-07 01:03:03,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1208 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=502, Invalid=1754, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 01:03:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6961 states. [2021-11-07 01:03:04,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6961 to 6948. [2021-11-07 01:03:04,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6948 states, 5540 states have (on average 1.1487364620938627) internal successors, (6364), 5465 states have internal predecessors, (6364), 1143 states have call successors, (1143), 105 states have call predecessors, (1143), 261 states have return successors, (3232), 1377 states have call predecessors, (3232), 1136 states have call successors, (3232) [2021-11-07 01:03:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6948 states to 6948 states and 10739 transitions. [2021-11-07 01:03:04,169 INFO L78 Accepts]: Start accepts. Automaton has 6948 states and 10739 transitions. Word has length 609 [2021-11-07 01:03:04,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:04,169 INFO L470 AbstractCegarLoop]: Abstraction has 6948 states and 10739 transitions. [2021-11-07 01:03:04,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.44) internal successors, (111), 25 states have internal predecessors, (111), 13 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 11 states have call predecessors, (22), 13 states have call successors, (22) [2021-11-07 01:03:04,170 INFO L276 IsEmpty]: Start isEmpty. Operand 6948 states and 10739 transitions. [2021-11-07 01:03:04,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2021-11-07 01:03:04,179 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:04,180 INFO L513 BasicCegarLoop]: trace histogram [61, 60, 45, 25, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 20, 20, 20, 16, 15, 15, 14, 14, 14, 14, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1] [2021-11-07 01:03:04,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:04,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable568,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:04,403 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:03:04,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash -162157811, now seen corresponding path program 11 times [2021-11-07 01:03:04,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:03:04,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154177241] [2021-11-07 01:03:04,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:04,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:03:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:04,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11125 backedges. 1334 proven. 944 refuted. 0 times theorem prover too weak. 8847 trivial. 0 not checked. [2021-11-07 01:03:04,655 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:03:04,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154177241] [2021-11-07 01:03:04,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154177241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:03:04,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379064138] [2021-11-07 01:03:04,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:03:04,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:04,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:04,657 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:03:04,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-07 01:03:08,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-07 01:03:08,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:03:08,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 01:03:08,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:09,761 INFO L134 CoverageAnalysis]: Checked inductivity of 11125 backedges. 6121 proven. 89 refuted. 0 times theorem prover too weak. 4915 trivial. 0 not checked. [2021-11-07 01:03:09,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:12,299 INFO L134 CoverageAnalysis]: Checked inductivity of 11125 backedges. 1735 proven. 923 refuted. 0 times theorem prover too weak. 8467 trivial. 0 not checked. [2021-11-07 01:03:12,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379064138] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:12,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1893595297] [2021-11-07 01:03:12,301 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:03:12,301 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:03:12,301 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:03:12,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:03:12,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 15] total 33 [2021-11-07 01:03:12,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467550570] [2021-11-07 01:03:12,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-07 01:03:12,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:03:12,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-07 01:03:12,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=952, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 01:03:12,305 INFO L87 Difference]: Start difference. First operand 6948 states and 10739 transitions. Second operand has 33 states, 33 states have (on average 5.606060606060606) internal successors, (185), 33 states have internal predecessors, (185), 18 states have call successors, (30), 2 states have call predecessors, (30), 12 states have return successors, (38), 18 states have call predecessors, (38), 18 states have call successors, (38) [2021-11-07 01:03:14,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:14,389 INFO L93 Difference]: Finished difference Result 12537 states and 23128 transitions. [2021-11-07 01:03:14,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 01:03:14,390 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.606060606060606) internal successors, (185), 33 states have internal predecessors, (185), 18 states have call successors, (30), 2 states have call predecessors, (30), 12 states have return successors, (38), 18 states have call predecessors, (38), 18 states have call successors, (38) Word has length 617 [2021-11-07 01:03:14,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:14,420 INFO L225 Difference]: With dead ends: 12537 [2021-11-07 01:03:14,420 INFO L226 Difference]: Without dead ends: 7217 [2021-11-07 01:03:14,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1286 GetRequests, 1220 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=855, Invalid=3567, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 01:03:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7217 states. [2021-11-07 01:03:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7217 to 6452. [2021-11-07 01:03:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6452 states, 5158 states have (on average 1.154905001938736) internal successors, (5957), 5112 states have internal predecessors, (5957), 1077 states have call successors, (1077), 129 states have call predecessors, (1077), 213 states have return successors, (2278), 1210 states have call predecessors, (2278), 1063 states have call successors, (2278) [2021-11-07 01:03:14,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6452 states to 6452 states and 9312 transitions. [2021-11-07 01:03:14,976 INFO L78 Accepts]: Start accepts. Automaton has 6452 states and 9312 transitions. Word has length 617 [2021-11-07 01:03:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:14,977 INFO L470 AbstractCegarLoop]: Abstraction has 6452 states and 9312 transitions. [2021-11-07 01:03:14,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.606060606060606) internal successors, (185), 33 states have internal predecessors, (185), 18 states have call successors, (30), 2 states have call predecessors, (30), 12 states have return successors, (38), 18 states have call predecessors, (38), 18 states have call successors, (38) [2021-11-07 01:03:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand 6452 states and 9312 transitions. [2021-11-07 01:03:14,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 577 [2021-11-07 01:03:14,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:14,986 INFO L513 BasicCegarLoop]: trace histogram [57, 56, 42, 23, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 18, 15, 15, 15, 14, 14, 14, 14, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1] [2021-11-07 01:03:15,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-11-07 01:03:15,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable569 [2021-11-07 01:03:15,186 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:03:15,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:15,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1711159555, now seen corresponding path program 12 times [2021-11-07 01:03:15,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:03:15,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709075101] [2021-11-07 01:03:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:15,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:03:15,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:15,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9633 backedges. 1501 proven. 32 refuted. 0 times theorem prover too weak. 8100 trivial. 0 not checked. [2021-11-07 01:03:15,419 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:03:15,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709075101] [2021-11-07 01:03:15,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709075101] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:03:15,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114323440] [2021-11-07 01:03:15,419 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:03:15,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:15,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:15,421 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:03:15,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-07 01:03:19,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:03:19,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:03:19,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 1347 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 01:03:19,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9633 backedges. 1501 proven. 32 refuted. 0 times theorem prover too weak. 8100 trivial. 0 not checked. [2021-11-07 01:03:20,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 9633 backedges. 1558 proven. 32 refuted. 0 times theorem prover too weak. 8043 trivial. 0 not checked. [2021-11-07 01:03:22,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114323440] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:22,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1055449941] [2021-11-07 01:03:22,127 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:03:22,127 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:03:22,127 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:03:22,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:03:22,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 10] total 14 [2021-11-07 01:03:22,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767696498] [2021-11-07 01:03:22,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 01:03:22,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:03:22,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 01:03:22,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:03:22,131 INFO L87 Difference]: Start difference. First operand 6452 states and 9312 transitions. Second operand has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (14), 11 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-07 01:03:22,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:22,617 INFO L93 Difference]: Finished difference Result 7024 states and 10712 transitions. [2021-11-07 01:03:22,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 01:03:22,617 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (14), 11 states have call predecessors, (14), 3 states have call successors, (14) Word has length 576 [2021-11-07 01:03:22,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:22,636 INFO L225 Difference]: With dead ends: 7024 [2021-11-07 01:03:22,636 INFO L226 Difference]: Without dead ends: 7023 [2021-11-07 01:03:22,639 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1178 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:03:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7023 states. [2021-11-07 01:03:22,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7023 to 6625. [2021-11-07 01:03:22,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6625 states, 5298 states have (on average 1.1521328803322008) internal successors, (6104), 5234 states have internal predecessors, (6104), 1095 states have call successors, (1095), 129 states have call predecessors, (1095), 228 states have return successors, (2448), 1261 states have call predecessors, (2448), 1081 states have call successors, (2448) [2021-11-07 01:03:23,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6625 states to 6625 states and 9647 transitions. [2021-11-07 01:03:23,011 INFO L78 Accepts]: Start accepts. Automaton has 6625 states and 9647 transitions. Word has length 576 [2021-11-07 01:03:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:23,011 INFO L470 AbstractCegarLoop]: Abstraction has 6625 states and 9647 transitions. [2021-11-07 01:03:23,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 13 states have internal predecessors, (57), 3 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (14), 11 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-07 01:03:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 6625 states and 9647 transitions. [2021-11-07 01:03:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2021-11-07 01:03:23,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:23,020 INFO L513 BasicCegarLoop]: trace histogram [57, 56, 42, 23, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 18, 15, 15, 15, 14, 14, 14, 14, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1] [2021-11-07 01:03:23,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:23,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable570,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:23,220 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting partsErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:03:23,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1506338593, now seen corresponding path program 2 times [2021-11-07 01:03:23,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:03:23,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147568792] [2021-11-07 01:03:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:23,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:03:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:23,459 INFO L134 CoverageAnalysis]: Checked inductivity of 9651 backedges. 1519 proven. 32 refuted. 0 times theorem prover too weak. 8100 trivial. 0 not checked. [2021-11-07 01:03:23,459 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:03:23,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147568792] [2021-11-07 01:03:23,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147568792] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:03:23,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447960493] [2021-11-07 01:03:23,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:03:23,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:23,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:23,464 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:03:23,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-07 01:03:27,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 01:03:27,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:03:27,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 01:03:27,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:28,713 INFO L134 CoverageAnalysis]: Checked inductivity of 9651 backedges. 1115 proven. 21 refuted. 0 times theorem prover too weak. 8515 trivial. 0 not checked. [2021-11-07 01:03:28,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 9651 backedges. 1115 proven. 21 refuted. 0 times theorem prover too weak. 8515 trivial. 0 not checked. [2021-11-07 01:03:30,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447960493] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:30,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1546947790] [2021-11-07 01:03:30,316 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:03:30,316 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:03:30,317 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:03:30,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:03:30,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2021-11-07 01:03:30,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967311477] [2021-11-07 01:03:30,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:03:30,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:03:30,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:03:30,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:03:30,319 INFO L87 Difference]: Start difference. First operand 6625 states and 9647 transitions. Second operand has 13 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (11), 8 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-07 01:03:30,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:30,619 INFO L93 Difference]: Finished difference Result 6625 states and 9647 transitions. [2021-11-07 01:03:30,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:03:30,629 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (11), 8 states have call predecessors, (11), 4 states have call successors, (11) Word has length 577 [2021-11-07 01:03:30,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:30,656 INFO L225 Difference]: With dead ends: 6625 [2021-11-07 01:03:30,657 INFO L226 Difference]: Without dead ends: 6624 [2021-11-07 01:03:30,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1177 GetRequests, 1165 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:03:30,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6624 states. [2021-11-07 01:03:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6624 to 6455. [2021-11-07 01:03:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6455 states, 5157 states have (on average 1.1485359705254994) internal successors, (5923), 5111 states have internal predecessors, (5923), 1078 states have call successors, (1078), 129 states have call predecessors, (1078), 217 states have return successors, (2366), 1214 states have call predecessors, (2366), 1064 states have call successors, (2366) [2021-11-07 01:03:31,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6455 states to 6455 states and 9367 transitions. [2021-11-07 01:03:31,023 INFO L78 Accepts]: Start accepts. Automaton has 6455 states and 9367 transitions. Word has length 577 [2021-11-07 01:03:31,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:31,024 INFO L470 AbstractCegarLoop]: Abstraction has 6455 states and 9367 transitions. [2021-11-07 01:03:31,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 4 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (11), 8 states have call predecessors, (11), 4 states have call successors, (11) [2021-11-07 01:03:31,024 INFO L276 IsEmpty]: Start isEmpty. Operand 6455 states and 9367 transitions. [2021-11-07 01:03:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 605 [2021-11-07 01:03:31,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:31,034 INFO L513 BasicCegarLoop]: trace histogram [60, 58, 44, 25, 21, 21, 21, 21, 20, 20, 19, 19, 19, 19, 19, 19, 19, 19, 16, 16, 16, 15, 15, 15, 15, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1] [2021-11-07 01:03:31,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:31,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable571,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:31,234 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:03:31,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:31,235 INFO L85 PathProgramCache]: Analyzing trace with hash -60799849, now seen corresponding path program 4 times [2021-11-07 01:03:31,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:03:31,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245247986] [2021-11-07 01:03:31,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:31,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:03:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:31,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10587 backedges. 726 proven. 25 refuted. 0 times theorem prover too weak. 9836 trivial. 0 not checked. [2021-11-07 01:03:31,596 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:03:31,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245247986] [2021-11-07 01:03:31,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245247986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:03:31,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693834264] [2021-11-07 01:03:31,597 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:03:31,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:31,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:31,600 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:03:31,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-07 01:03:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:36,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 1411 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 01:03:36,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 10587 backedges. 768 proven. 497 refuted. 0 times theorem prover too weak. 9322 trivial. 0 not checked. [2021-11-07 01:03:37,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 10587 backedges. 536 proven. 501 refuted. 0 times theorem prover too weak. 9550 trivial. 0 not checked. [2021-11-07 01:03:39,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693834264] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:39,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [759355688] [2021-11-07 01:03:39,229 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:03:39,229 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:03:39,229 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:03:39,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:03:39,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 20, 20] total 38 [2021-11-07 01:03:39,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458589156] [2021-11-07 01:03:39,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 01:03:39,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:03:39,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 01:03:39,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=1272, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 01:03:39,233 INFO L87 Difference]: Start difference. First operand 6455 states and 9367 transitions. Second operand has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 34 states have internal predecessors, (126), 20 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2021-11-07 01:03:41,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:41,764 INFO L93 Difference]: Finished difference Result 13957 states and 22528 transitions. [2021-11-07 01:03:41,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-11-07 01:03:41,765 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 34 states have internal predecessors, (126), 20 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) Word has length 604 [2021-11-07 01:03:41,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:41,816 INFO L225 Difference]: With dead ends: 13957 [2021-11-07 01:03:41,816 INFO L226 Difference]: Without dead ends: 10118 [2021-11-07 01:03:41,843 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1293 GetRequests, 1191 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2780 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1213, Invalid=9499, Unknown=0, NotChecked=0, Total=10712 [2021-11-07 01:03:41,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10118 states. [2021-11-07 01:03:42,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10118 to 10049. [2021-11-07 01:03:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10049 states, 8025 states have (on average 1.1436760124610592) internal successors, (9178), 7925 states have internal predecessors, (9178), 1627 states have call successors, (1627), 213 states have call predecessors, (1627), 394 states have return successors, (4143), 1910 states have call predecessors, (4143), 1605 states have call successors, (4143) [2021-11-07 01:03:42,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10049 states to 10049 states and 14948 transitions. [2021-11-07 01:03:42,427 INFO L78 Accepts]: Start accepts. Automaton has 10049 states and 14948 transitions. Word has length 604 [2021-11-07 01:03:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:42,428 INFO L470 AbstractCegarLoop]: Abstraction has 10049 states and 14948 transitions. [2021-11-07 01:03:42,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.3157894736842106) internal successors, (126), 34 states have internal predecessors, (126), 20 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2021-11-07 01:03:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 10049 states and 14948 transitions. [2021-11-07 01:03:42,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 693 [2021-11-07 01:03:42,439 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:42,439 INFO L513 BasicCegarLoop]: trace histogram [68, 67, 51, 28, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 24, 23, 17, 15, 15, 14, 14, 14, 14, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-07 01:03:42,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:42,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable572,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:42,640 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:03:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1389821259, now seen corresponding path program 13 times [2021-11-07 01:03:42,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:03:42,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036643408] [2021-11-07 01:03:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:42,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:03:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 14156 backedges. 1037 proven. 822 refuted. 0 times theorem prover too weak. 12297 trivial. 0 not checked. [2021-11-07 01:03:43,151 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:03:43,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036643408] [2021-11-07 01:03:43,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036643408] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:03:43,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026249181] [2021-11-07 01:03:43,151 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:03:43,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:43,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:43,156 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:03:43,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-07 01:03:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:47,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 01:03:47,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:03:49,576 INFO L134 CoverageAnalysis]: Checked inductivity of 14156 backedges. 3376 proven. 563 refuted. 0 times theorem prover too weak. 10217 trivial. 0 not checked. [2021-11-07 01:03:49,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:03:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14156 backedges. 704 proven. 667 refuted. 0 times theorem prover too weak. 12785 trivial. 0 not checked. [2021-11-07 01:03:51,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026249181] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:03:51,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [317163252] [2021-11-07 01:03:51,205 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:03:51,205 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:03:51,206 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:03:51,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:03:51,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 36 [2021-11-07 01:03:51,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065192388] [2021-11-07 01:03:51,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 01:03:51,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:03:51,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 01:03:51,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 01:03:51,209 INFO L87 Difference]: Start difference. First operand 10049 states and 14948 transitions. Second operand has 36 states, 36 states have (on average 3.9444444444444446) internal successors, (142), 33 states have internal predecessors, (142), 20 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2021-11-07 01:03:53,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:03:53,062 INFO L93 Difference]: Finished difference Result 17885 states and 28736 transitions. [2021-11-07 01:03:53,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 01:03:53,062 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 3.9444444444444446) internal successors, (142), 33 states have internal predecessors, (142), 20 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) Word has length 692 [2021-11-07 01:03:53,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:03:53,106 INFO L225 Difference]: With dead ends: 17885 [2021-11-07 01:03:53,106 INFO L226 Difference]: Without dead ends: 10520 [2021-11-07 01:03:53,142 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1437 GetRequests, 1370 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1037 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=688, Invalid=3868, Unknown=0, NotChecked=0, Total=4556 [2021-11-07 01:03:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10520 states. [2021-11-07 01:03:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10520 to 10118. [2021-11-07 01:03:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10118 states, 8078 states have (on average 1.1429809358752165) internal successors, (9233), 7980 states have internal predecessors, (9233), 1636 states have call successors, (1636), 217 states have call predecessors, (1636), 401 states have return successors, (4159), 1920 states have call predecessors, (4159), 1612 states have call successors, (4159) [2021-11-07 01:03:53,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10118 states to 10118 states and 15028 transitions. [2021-11-07 01:03:53,827 INFO L78 Accepts]: Start accepts. Automaton has 10118 states and 15028 transitions. Word has length 692 [2021-11-07 01:03:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:03:53,828 INFO L470 AbstractCegarLoop]: Abstraction has 10118 states and 15028 transitions. [2021-11-07 01:03:53,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 3.9444444444444446) internal successors, (142), 33 states have internal predecessors, (142), 20 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (22), 13 states have call predecessors, (22), 17 states have call successors, (22) [2021-11-07 01:03:53,828 INFO L276 IsEmpty]: Start isEmpty. Operand 10118 states and 15028 transitions. [2021-11-07 01:03:53,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 726 [2021-11-07 01:03:53,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:03:53,842 INFO L513 BasicCegarLoop]: trace histogram [73, 68, 54, 32, 28, 28, 28, 28, 26, 26, 26, 26, 26, 25, 25, 24, 24, 22, 19, 15, 15, 14, 14, 14, 14, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-07 01:03:53,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-07 01:03:54,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable573 [2021-11-07 01:03:54,042 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:03:54,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:03:54,043 INFO L85 PathProgramCache]: Analyzing trace with hash 257478707, now seen corresponding path program 14 times [2021-11-07 01:03:54,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:03:54,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599005753] [2021-11-07 01:03:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:03:54,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:03:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:03:54,483 INFO L134 CoverageAnalysis]: Checked inductivity of 15601 backedges. 1088 proven. 1002 refuted. 0 times theorem prover too weak. 13511 trivial. 0 not checked. [2021-11-07 01:03:54,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:03:54,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599005753] [2021-11-07 01:03:54,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599005753] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:03:54,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428364377] [2021-11-07 01:03:54,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:03:54,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:03:54,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:03:54,485 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:03:54,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-07 01:03:59,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-11-07 01:03:59,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:03:59,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 01:03:59,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:01,556 INFO L134 CoverageAnalysis]: Checked inductivity of 15601 backedges. 2622 proven. 188 refuted. 0 times theorem prover too weak. 12791 trivial. 0 not checked. [2021-11-07 01:04:01,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:04,458 INFO L134 CoverageAnalysis]: Checked inductivity of 15601 backedges. 2618 proven. 195 refuted. 0 times theorem prover too weak. 12788 trivial. 0 not checked. [2021-11-07 01:04:04,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428364377] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:04,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [224166683] [2021-11-07 01:04:04,460 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:04:04,460 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:04:04,460 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:04:04,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:04:04,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15, 17] total 45 [2021-11-07 01:04:04,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356863711] [2021-11-07 01:04:04,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-07 01:04:04,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:04:04,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-07 01:04:04,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1825, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 01:04:04,465 INFO L87 Difference]: Start difference. First operand 10118 states and 15028 transitions. Second operand has 45 states, 45 states have (on average 4.6) internal successors, (207), 42 states have internal predecessors, (207), 26 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (32), 18 states have call predecessors, (32), 23 states have call successors, (32) [2021-11-07 01:04:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:08,972 INFO L93 Difference]: Finished difference Result 16713 states and 28698 transitions. [2021-11-07 01:04:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-07 01:04:08,973 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 4.6) internal successors, (207), 42 states have internal predecessors, (207), 26 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (32), 18 states have call predecessors, (32), 23 states have call successors, (32) Word has length 725 [2021-11-07 01:04:08,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:09,021 INFO L225 Difference]: With dead ends: 16713 [2021-11-07 01:04:09,021 INFO L226 Difference]: Without dead ends: 8958 [2021-11-07 01:04:09,076 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1570 GetRequests, 1438 SyntacticMatches, 1 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4805 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2211, Invalid=15345, Unknown=0, NotChecked=0, Total=17556 [2021-11-07 01:04:09,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8958 states. [2021-11-07 01:04:09,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8958 to 7588. [2021-11-07 01:04:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7588 states, 6051 states have (on average 1.155346223764667) internal successors, (6991), 6035 states have internal predecessors, (6991), 1287 states have call successors, (1287), 175 states have call predecessors, (1287), 247 states have return successors, (2228), 1377 states have call predecessors, (2228), 1287 states have call successors, (2228) [2021-11-07 01:04:09,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7588 states to 7588 states and 10506 transitions. [2021-11-07 01:04:09,790 INFO L78 Accepts]: Start accepts. Automaton has 7588 states and 10506 transitions. Word has length 725 [2021-11-07 01:04:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:09,791 INFO L470 AbstractCegarLoop]: Abstraction has 7588 states and 10506 transitions. [2021-11-07 01:04:09,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 4.6) internal successors, (207), 42 states have internal predecessors, (207), 26 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (32), 18 states have call predecessors, (32), 23 states have call successors, (32) [2021-11-07 01:04:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7588 states and 10506 transitions. [2021-11-07 01:04:09,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 986 [2021-11-07 01:04:09,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:09,812 INFO L513 BasicCegarLoop]: trace histogram [97, 95, 74, 41, 37, 37, 37, 37, 37, 37, 37, 37, 37, 36, 36, 35, 35, 33, 23, 19, 19, 18, 18, 18, 18, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1] [2021-11-07 01:04:09,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:10,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable574 [2021-11-07 01:04:10,012 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:04:10,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash -780357528, now seen corresponding path program 15 times [2021-11-07 01:04:10,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:04:10,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607510701] [2021-11-07 01:04:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:10,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:04:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:10,554 INFO L134 CoverageAnalysis]: Checked inductivity of 29197 backedges. 2142 proven. 1491 refuted. 0 times theorem prover too weak. 25564 trivial. 0 not checked. [2021-11-07 01:04:10,554 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:04:10,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607510701] [2021-11-07 01:04:10,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607510701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:04:10,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671483243] [2021-11-07 01:04:10,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:04:10,554 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:04:10,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:04:10,555 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:04:10,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-07 01:04:16,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:04:16,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:04:16,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-07 01:04:16,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 29197 backedges. 9364 proven. 1378 refuted. 0 times theorem prover too weak. 18455 trivial. 0 not checked. [2021-11-07 01:04:18,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:21,899 INFO L134 CoverageAnalysis]: Checked inductivity of 29197 backedges. 4276 proven. 2088 refuted. 0 times theorem prover too weak. 22833 trivial. 0 not checked. [2021-11-07 01:04:21,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671483243] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:21,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1680635055] [2021-11-07 01:04:21,900 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:04:21,901 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:04:21,901 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:04:21,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:04:21,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21, 24] total 45 [2021-11-07 01:04:21,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919321166] [2021-11-07 01:04:21,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-07 01:04:21,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:04:21,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-07 01:04:21,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1836, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 01:04:21,904 INFO L87 Difference]: Start difference. First operand 7588 states and 10506 transitions. Second operand has 45 states, 45 states have (on average 5.488888888888889) internal successors, (247), 44 states have internal predecessors, (247), 30 states have call successors, (41), 4 states have call predecessors, (41), 13 states have return successors, (42), 21 states have call predecessors, (42), 28 states have call successors, (42) [2021-11-07 01:04:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:26,098 INFO L93 Difference]: Finished difference Result 13848 states and 22498 transitions. [2021-11-07 01:04:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-07 01:04:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.488888888888889) internal successors, (247), 44 states have internal predecessors, (247), 30 states have call successors, (41), 4 states have call predecessors, (41), 13 states have return successors, (42), 21 states have call predecessors, (42), 28 states have call successors, (42) Word has length 985 [2021-11-07 01:04:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:26,145 INFO L225 Difference]: With dead ends: 13848 [2021-11-07 01:04:26,146 INFO L226 Difference]: Without dead ends: 8817 [2021-11-07 01:04:26,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2062 GetRequests, 1950 SyntacticMatches, 2 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2901 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1612, Invalid=10820, Unknown=0, NotChecked=0, Total=12432 [2021-11-07 01:04:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8817 states. [2021-11-07 01:04:26,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8817 to 8321. [2021-11-07 01:04:26,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8321 states, 6636 states have (on average 1.1677215189873418) internal successors, (7749), 6624 states have internal predecessors, (7749), 1437 states have call successors, (1437), 183 states have call predecessors, (1437), 245 states have return successors, (2797), 1513 states have call predecessors, (2797), 1437 states have call successors, (2797) [2021-11-07 01:04:26,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8321 states to 8321 states and 11983 transitions. [2021-11-07 01:04:26,753 INFO L78 Accepts]: Start accepts. Automaton has 8321 states and 11983 transitions. Word has length 985 [2021-11-07 01:04:26,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:26,754 INFO L470 AbstractCegarLoop]: Abstraction has 8321 states and 11983 transitions. [2021-11-07 01:04:26,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.488888888888889) internal successors, (247), 44 states have internal predecessors, (247), 30 states have call successors, (41), 4 states have call predecessors, (41), 13 states have return successors, (42), 21 states have call predecessors, (42), 28 states have call successors, (42) [2021-11-07 01:04:26,755 INFO L276 IsEmpty]: Start isEmpty. Operand 8321 states and 11983 transitions. [2021-11-07 01:04:26,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2021-11-07 01:04:26,772 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:26,772 INFO L513 BasicCegarLoop]: trace histogram [79, 77, 61, 34, 30, 30, 30, 30, 30, 30, 30, 30, 30, 29, 29, 28, 28, 27, 18, 15, 15, 14, 14, 14, 14, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1] [2021-11-07 01:04:26,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:27,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable575,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:04:27,000 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:04:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1017862123, now seen corresponding path program 16 times [2021-11-07 01:04:27,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:04:27,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909282084] [2021-11-07 01:04:27,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:27,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:04:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:27,565 INFO L134 CoverageAnalysis]: Checked inductivity of 19195 backedges. 1797 proven. 1832 refuted. 0 times theorem prover too weak. 15566 trivial. 0 not checked. [2021-11-07 01:04:27,566 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:04:27,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909282084] [2021-11-07 01:04:27,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909282084] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:04:27,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258697041] [2021-11-07 01:04:27,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:04:27,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:04:27,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:04:27,568 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:04:27,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-07 01:04:33,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:33,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 1830 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 01:04:33,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 19195 backedges. 10438 proven. 432 refuted. 0 times theorem prover too weak. 8325 trivial. 0 not checked. [2021-11-07 01:04:35,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:37,891 INFO L134 CoverageAnalysis]: Checked inductivity of 19195 backedges. 1822 proven. 1813 refuted. 0 times theorem prover too weak. 15560 trivial. 0 not checked. [2021-11-07 01:04:37,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258697041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:37,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1981520534] [2021-11-07 01:04:37,892 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:04:37,892 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:04:37,893 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:04:37,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:04:37,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 20] total 28 [2021-11-07 01:04:37,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935732486] [2021-11-07 01:04:37,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 01:04:37,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:04:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 01:04:37,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:04:37,895 INFO L87 Difference]: Start difference. First operand 8321 states and 11983 transitions. Second operand has 28 states, 28 states have (on average 5.464285714285714) internal successors, (153), 28 states have internal predecessors, (153), 19 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (30), 12 states have call predecessors, (30), 19 states have call successors, (30) [2021-11-07 01:04:39,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:39,079 INFO L93 Difference]: Finished difference Result 13736 states and 20363 transitions. [2021-11-07 01:04:39,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 01:04:39,080 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.464285714285714) internal successors, (153), 28 states have internal predecessors, (153), 19 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (30), 12 states have call predecessors, (30), 19 states have call successors, (30) Word has length 799 [2021-11-07 01:04:39,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:39,115 INFO L225 Difference]: With dead ends: 13736 [2021-11-07 01:04:39,115 INFO L226 Difference]: Without dead ends: 8087 [2021-11-07 01:04:39,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1643 GetRequests, 1591 SyntacticMatches, 6 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=361, Invalid=1895, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 01:04:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8087 states. [2021-11-07 01:04:39,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8087 to 7836. [2021-11-07 01:04:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7836 states, 6250 states have (on average 1.16368) internal successors, (7273), 6235 states have internal predecessors, (7273), 1335 states have call successors, (1335), 178 states have call predecessors, (1335), 248 states have return successors, (2790), 1422 states have call predecessors, (2790), 1335 states have call successors, (2790) [2021-11-07 01:04:39,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7836 states to 7836 states and 11398 transitions. [2021-11-07 01:04:39,875 INFO L78 Accepts]: Start accepts. Automaton has 7836 states and 11398 transitions. Word has length 799 [2021-11-07 01:04:39,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:39,876 INFO L470 AbstractCegarLoop]: Abstraction has 7836 states and 11398 transitions. [2021-11-07 01:04:39,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.464285714285714) internal successors, (153), 28 states have internal predecessors, (153), 19 states have call successors, (27), 2 states have call predecessors, (27), 7 states have return successors, (30), 12 states have call predecessors, (30), 19 states have call successors, (30) [2021-11-07 01:04:39,876 INFO L276 IsEmpty]: Start isEmpty. Operand 7836 states and 11398 transitions. [2021-11-07 01:04:39,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1133 [2021-11-07 01:04:39,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:39,904 INFO L513 BasicCegarLoop]: trace histogram [111, 110, 88, 49, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 43, 42, 42, 39, 23, 19, 19, 18, 18, 18, 18, 6, 6, 6, 6, 5, 4, 4, 4, 1, 1, 1, 1] [2021-11-07 01:04:39,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-07 01:04:40,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable576 [2021-11-07 01:04:40,108 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:04:40,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:40,109 INFO L85 PathProgramCache]: Analyzing trace with hash -2099261487, now seen corresponding path program 17 times [2021-11-07 01:04:40,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:04:40,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834376251] [2021-11-07 01:04:40,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:40,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:04:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:40,755 INFO L134 CoverageAnalysis]: Checked inductivity of 39127 backedges. 1070 proven. 457 refuted. 0 times theorem prover too weak. 37600 trivial. 0 not checked. [2021-11-07 01:04:40,756 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:04:40,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834376251] [2021-11-07 01:04:40,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834376251] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:04:40,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544447122] [2021-11-07 01:04:40,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 01:04:40,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:04:40,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:04:40,759 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:04:40,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-07 01:04:47,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-07 01:04:47,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:04:47,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 01:04:47,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:04:49,440 INFO L134 CoverageAnalysis]: Checked inductivity of 39127 backedges. 18873 proven. 64 refuted. 0 times theorem prover too weak. 20190 trivial. 0 not checked. [2021-11-07 01:04:49,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:04:52,144 INFO L134 CoverageAnalysis]: Checked inductivity of 39127 backedges. 1326 proven. 555 refuted. 0 times theorem prover too weak. 37246 trivial. 0 not checked. [2021-11-07 01:04:52,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544447122] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:04:52,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2139220236] [2021-11-07 01:04:52,146 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:04:52,146 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:04:52,146 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:04:52,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:04:52,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 9, 9] total 23 [2021-11-07 01:04:52,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346340483] [2021-11-07 01:04:52,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 01:04:52,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:04:52,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 01:04:52,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:04:52,150 INFO L87 Difference]: Start difference. First operand 7836 states and 11398 transitions. Second operand has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 10 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) [2021-11-07 01:04:54,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:04:54,634 INFO L93 Difference]: Finished difference Result 35667 states and 59654 transitions. [2021-11-07 01:04:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-07 01:04:54,634 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 10 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) Word has length 1132 [2021-11-07 01:04:54,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:04:54,786 INFO L225 Difference]: With dead ends: 35667 [2021-11-07 01:04:54,786 INFO L226 Difference]: Without dead ends: 31523 [2021-11-07 01:04:54,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2328 GetRequests, 2264 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=729, Invalid=3303, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 01:04:54,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31523 states. [2021-11-07 01:04:57,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31523 to 29731. [2021-11-07 01:04:57,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29731 states, 24713 states have (on average 1.1601990855015578) internal successors, (28672), 23494 states have internal predecessors, (28672), 4751 states have call successors, (4751), 193 states have call predecessors, (4751), 264 states have return successors, (15088), 6043 states have call predecessors, (15088), 4751 states have call successors, (15088) [2021-11-07 01:04:57,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29731 states to 29731 states and 48511 transitions. [2021-11-07 01:04:57,543 INFO L78 Accepts]: Start accepts. Automaton has 29731 states and 48511 transitions. Word has length 1132 [2021-11-07 01:04:57,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:04:57,545 INFO L470 AbstractCegarLoop]: Abstraction has 29731 states and 48511 transitions. [2021-11-07 01:04:57,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.956521739130435) internal successors, (114), 23 states have internal predecessors, (114), 10 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (21), 10 states have call predecessors, (21), 10 states have call successors, (21) [2021-11-07 01:04:57,545 INFO L276 IsEmpty]: Start isEmpty. Operand 29731 states and 48511 transitions. [2021-11-07 01:04:57,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1868 [2021-11-07 01:04:57,621 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:04:57,622 INFO L513 BasicCegarLoop]: trace histogram [186, 185, 145, 88, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 70, 69, 69, 57, 41, 28, 28, 27, 27, 27, 27, 18, 18, 18, 18, 5, 4, 4, 4, 1, 1, 1, 1] [2021-11-07 01:04:57,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-11-07 01:04:57,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable577 [2021-11-07 01:04:57,848 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:04:57,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:04:57,849 INFO L85 PathProgramCache]: Analyzing trace with hash -2124244807, now seen corresponding path program 18 times [2021-11-07 01:04:57,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:04:57,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449202706] [2021-11-07 01:04:57,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:04:57,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:04:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:04:59,277 INFO L134 CoverageAnalysis]: Checked inductivity of 109054 backedges. 2088 proven. 323 refuted. 0 times theorem prover too weak. 106643 trivial. 0 not checked. [2021-11-07 01:04:59,277 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:04:59,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449202706] [2021-11-07 01:04:59,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449202706] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:04:59,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486541382] [2021-11-07 01:04:59,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:04:59,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:04:59,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:04:59,279 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:04:59,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-07 01:05:06,641 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:05:06,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:05:06,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 3087 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 01:05:06,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:10,886 INFO L134 CoverageAnalysis]: Checked inductivity of 109054 backedges. 19308 proven. 1013 refuted. 0 times theorem prover too weak. 88733 trivial. 0 not checked. [2021-11-07 01:05:10,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:05:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 109054 backedges. 8896 proven. 1609 refuted. 0 times theorem prover too weak. 98549 trivial. 0 not checked. [2021-11-07 01:05:17,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486541382] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:05:17,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [815358905] [2021-11-07 01:05:17,348 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:05:17,348 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:05:17,349 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:05:17,350 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:05:17,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 18, 22] total 53 [2021-11-07 01:05:17,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535401778] [2021-11-07 01:05:17,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-07 01:05:17,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:05:17,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-07 01:05:17,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2542, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 01:05:17,358 INFO L87 Difference]: Start difference. First operand 29731 states and 48511 transitions. Second operand has 53 states, 53 states have (on average 4.30188679245283) internal successors, (228), 53 states have internal predecessors, (228), 31 states have call successors, (39), 3 states have call predecessors, (39), 12 states have return successors, (41), 23 states have call predecessors, (41), 30 states have call successors, (41) [2021-11-07 01:05:24,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:05:24,177 INFO L93 Difference]: Finished difference Result 67524 states and 131293 transitions. [2021-11-07 01:05:24,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-11-07 01:05:24,178 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 4.30188679245283) internal successors, (228), 53 states have internal predecessors, (228), 31 states have call successors, (39), 3 states have call predecessors, (39), 12 states have return successors, (41), 23 states have call predecessors, (41), 30 states have call successors, (41) Word has length 1867 [2021-11-07 01:05:24,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:05:24,461 INFO L225 Difference]: With dead ends: 67524 [2021-11-07 01:05:24,461 INFO L226 Difference]: Without dead ends: 38199 [2021-11-07 01:05:24,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3847 GetRequests, 3711 SyntacticMatches, 1 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5145 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2064, Invalid=16568, Unknown=0, NotChecked=0, Total=18632 [2021-11-07 01:05:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38199 states. [2021-11-07 01:05:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38199 to 32789. [2021-11-07 01:05:27,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32789 states, 27296 states have (on average 1.1495823563892145) internal successors, (31379), 25899 states have internal predecessors, (31379), 5141 states have call successors, (5141), 255 states have call predecessors, (5141), 349 states have return successors, (27681), 6634 states have call predecessors, (27681), 5139 states have call successors, (27681) [2021-11-07 01:05:28,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32789 states to 32789 states and 64201 transitions. [2021-11-07 01:05:28,143 INFO L78 Accepts]: Start accepts. Automaton has 32789 states and 64201 transitions. Word has length 1867 [2021-11-07 01:05:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:05:28,143 INFO L470 AbstractCegarLoop]: Abstraction has 32789 states and 64201 transitions. [2021-11-07 01:05:28,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 4.30188679245283) internal successors, (228), 53 states have internal predecessors, (228), 31 states have call successors, (39), 3 states have call predecessors, (39), 12 states have return successors, (41), 23 states have call predecessors, (41), 30 states have call successors, (41) [2021-11-07 01:05:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 32789 states and 64201 transitions. [2021-11-07 01:05:28,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 859 [2021-11-07 01:05:28,156 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:05:28,156 INFO L513 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 95, 95, 95, 94, 94, 1, 1, 1, 1, 1] [2021-11-07 01:05:28,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-07 01:05:28,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable578,45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:05:28,362 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:05:28,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:05:28,363 INFO L85 PathProgramCache]: Analyzing trace with hash -261380659, now seen corresponding path program 6 times [2021-11-07 01:05:28,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:05:28,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579157156] [2021-11-07 01:05:28,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:05:28,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:05:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:05:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 40091 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2021-11-07 01:05:38,586 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:05:38,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579157156] [2021-11-07 01:05:38,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579157156] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:05:38,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387659442] [2021-11-07 01:05:38,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 01:05:38,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:05:38,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:05:38,588 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:05:38,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-07 01:05:47,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 01:05:47,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:05:47,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 2393 conjuncts, 191 conjunts are in the unsatisfiable core [2021-11-07 01:05:47,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:05:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 40091 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2021-11-07 01:05:49,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:06:15,144 INFO L134 CoverageAnalysis]: Checked inductivity of 40091 backedges. 0 proven. 22231 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2021-11-07 01:06:15,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387659442] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:06:15,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [430316902] [2021-11-07 01:06:15,145 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2021-11-07 01:06:15,146 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:06:15,146 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-07 01:06:15,146 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-07 01:06:15,146 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-07 01:06:15,148 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,149 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-11-07 01:06:15,150 INFO L180 QuantifierPusher]: treesize reduction 6, result has 76.0 percent of original size [2021-11-07 01:06:15,151 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-11-07 01:06:15,152 INFO L180 QuantifierPusher]: treesize reduction 6, result has 82.4 percent of original size [2021-11-07 01:06:15,152 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-11-07 01:06:15,155 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:06:15,161 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,162 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:06:15,163 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,165 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:06:15,167 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,168 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:06:15,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,175 INFO L180 QuantifierPusher]: treesize reduction 26, result has 60.6 percent of original size [2021-11-07 01:06:15,176 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:06:15,177 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,178 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-11-07 01:06:15,182 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-11-07 01:06:15,184 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:06:15,185 INFO L180 QuantifierPusher]: treesize reduction 5, result has 91.7 percent of original size [2021-11-07 01:06:15,187 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:06:15,187 INFO L180 QuantifierPusher]: treesize reduction 5, result has 88.9 percent of original size [2021-11-07 01:06:15,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-11-07 01:06:15,191 INFO L180 QuantifierPusher]: treesize reduction 5, result has 91.7 percent of original size [2021-11-07 01:06:15,192 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:06:15,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,197 INFO L180 QuantifierPusher]: treesize reduction 29, result has 58.0 percent of original size [2021-11-07 01:06:15,199 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:06:15,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,207 INFO L180 QuantifierPusher]: treesize reduction 5, result has 94.8 percent of original size [2021-11-07 01:06:15,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-11-07 01:06:15,227 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,230 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,231 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,233 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:06:15,234 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,237 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:06:15,238 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:06:15,240 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,242 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-07 01:06:15,244 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,246 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,247 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,249 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-11-07 01:06:15,251 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,252 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,254 INFO L185 QuantifierPusher]: treesize reduction 12, result has 55.6 percent of original size 15 [2021-11-07 01:06:15,255 INFO L185 QuantifierPusher]: treesize reduction 12, result has 70.0 percent of original size 28 [2021-11-07 01:06:15,256 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,259 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 80 [2021-11-07 01:06:15,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,276 INFO L180 QuantifierPusher]: treesize reduction 26, result has 77.6 percent of original size [2021-11-07 01:06:15,279 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 77 [2021-11-07 01:06:15,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,292 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:06:15,294 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:06:15,296 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,299 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:06:15,300 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,302 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:06:15,303 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-11-07 01:06:15,308 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,310 INFO L185 QuantifierPusher]: treesize reduction 3, result has 92.3 percent of original size 36 [2021-11-07 01:06:15,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,318 INFO L180 QuantifierPusher]: treesize reduction 23, result has 63.5 percent of original size [2021-11-07 01:06:15,319 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:06:15,323 INFO L180 QuantifierPusher]: treesize reduction 11, result has 78.0 percent of original size [2021-11-07 01:06:15,325 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-11-07 01:06:15,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,372 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,374 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,374 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,376 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:06:15,377 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,377 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,378 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,380 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:06:15,381 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,382 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,383 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:06:15,384 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:06:15,388 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:06:15,392 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,394 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,394 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:06:15,397 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,398 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,399 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,399 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,401 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:06:15,402 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,404 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:06:15,405 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:06:15,407 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:06:15,408 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:06:15,411 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,412 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,412 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,414 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-11-07 01:06:15,415 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,417 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,418 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,419 INFO L185 QuantifierPusher]: treesize reduction 9, result has 75.0 percent of original size 27 [2021-11-07 01:06:15,420 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-07 01:06:15,421 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,422 INFO L185 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-11-07 01:06:15,423 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:06:15,425 INFO L185 QuantifierPusher]: treesize reduction 12, result has 85.7 percent of original size 72 [2021-11-07 01:06:15,426 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-07 01:06:15,428 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 104 [2021-11-07 01:06:15,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:06:15,451 INFO L197 IcfgInterpreter]: Interpreting procedure parts with input of size 23 for LOIs [2021-11-07 01:06:15,454 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-07 01:06:17,176 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:06:17,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:06:17,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2021-11-07 01:06:17,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281061776] [2021-11-07 01:06:17,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-11-07 01:06:17,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:06:17,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-11-07 01:06:17,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36724, Invalid=118118, Unknown=0, NotChecked=0, Total=154842 [2021-11-07 01:06:17,202 INFO L87 Difference]: Start difference. First operand 32789 states and 64201 transitions. Second operand has 382 states, 381 states have (on average 2.010498687664042) internal successors, (766), 382 states have internal predecessors, (766), 190 states have call successors, (190), 1 states have call predecessors, (190), 1 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2021-11-07 01:07:15,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:15,515 INFO L93 Difference]: Finished difference Result 69159 states and 138874 transitions. [2021-11-07 01:07:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 383 states. [2021-11-07 01:07:15,516 INFO L78 Accepts]: Start accepts. Automaton has has 382 states, 381 states have (on average 2.010498687664042) internal successors, (766), 382 states have internal predecessors, (766), 190 states have call successors, (190), 1 states have call predecessors, (190), 1 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) Word has length 858 [2021-11-07 01:07:15,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:15,844 INFO L225 Difference]: With dead ends: 69159 [2021-11-07 01:07:15,844 INFO L226 Difference]: Without dead ends: 69158 [2021-11-07 01:07:15,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2953 GetRequests, 2371 SyntacticMatches, 0 SemanticMatches, 582 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79799 ImplicationChecksByTransitivity, 50.7s TimeCoverageRelationStatistics Valid=91349, Invalid=249123, Unknown=0, NotChecked=0, Total=340472 [2021-11-07 01:07:15,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69158 states. [2021-11-07 01:07:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69158 to 63029. [2021-11-07 01:07:21,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63029 states, 52640 states have (on average 1.1559840425531915) internal successors, (60851), 49803 states have internal predecessors, (60851), 10037 states have call successors, (10037), 255 states have call predecessors, (10037), 349 states have return successors, (55521), 12970 states have call predecessors, (55521), 10035 states have call successors, (55521) [2021-11-07 01:07:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63029 states to 63029 states and 126409 transitions. [2021-11-07 01:07:22,377 INFO L78 Accepts]: Start accepts. Automaton has 63029 states and 126409 transitions. Word has length 858 [2021-11-07 01:07:22,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:07:22,378 INFO L470 AbstractCegarLoop]: Abstraction has 63029 states and 126409 transitions. [2021-11-07 01:07:22,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 382 states, 381 states have (on average 2.010498687664042) internal successors, (766), 382 states have internal predecessors, (766), 190 states have call successors, (190), 1 states have call predecessors, (190), 1 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2021-11-07 01:07:22,379 INFO L276 IsEmpty]: Start isEmpty. Operand 63029 states and 126409 transitions. [2021-11-07 01:07:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1570 [2021-11-07 01:07:22,423 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:07:22,424 INFO L513 BasicCegarLoop]: trace histogram [157, 155, 120, 72, 57, 57, 57, 57, 57, 57, 57, 57, 57, 56, 56, 55, 55, 48, 37, 28, 28, 27, 27, 27, 27, 15, 15, 15, 15, 5, 4, 4, 4, 1, 1, 1, 1] [2021-11-07 01:07:22,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-11-07 01:07:22,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable579,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:22,624 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting partsErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [partsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, partsErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-11-07 01:07:22,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:07:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2029739551, now seen corresponding path program 19 times [2021-11-07 01:07:22,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:07:22,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560495869] [2021-11-07 01:07:22,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:22,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:07:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 75954 backedges. 3288 proven. 889 refuted. 0 times theorem prover too weak. 71777 trivial. 0 not checked. [2021-11-07 01:07:23,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:07:23,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560495869] [2021-11-07 01:07:23,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560495869] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:07:23,873 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308681914] [2021-11-07 01:07:23,873 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 01:07:23,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:23,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:23,874 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:07:23,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed6d53c6-0c25-4fa8-a802-c015a4963c72/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-07 01:07:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:32,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 3594 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 01:07:32,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:35,805 INFO L134 CoverageAnalysis]: Checked inductivity of 75954 backedges. 38577 proven. 36 refuted. 0 times theorem prover too weak. 37341 trivial. 0 not checked. [2021-11-07 01:07:35,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:07:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 75954 backedges. 3288 proven. 889 refuted. 0 times theorem prover too weak. 71777 trivial. 0 not checked. [2021-11-07 01:07:39,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308681914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 01:07:39,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1718314727] [2021-11-07 01:07:39,249 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2021-11-07 01:07:39,250 INFO L166 IcfgInterpreter]: Building call graph [2021-11-07 01:07:39,250 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:609) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-07 01:07:39,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 01:07:39,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 27 [2021-11-07 01:07:39,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750315833] [2021-11-07 01:07:39,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 01:07:39,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:07:39,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 01:07:39,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=576, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:07:39,257 INFO L87 Difference]: Start difference. First operand 63029 states and 126409 transitions. Second operand has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 14 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 12 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 01:07:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:07:45,086 INFO L93 Difference]: Finished difference Result 122462 states and 251095 transitions. [2021-11-07 01:07:45,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 01:07:45,087 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.148148148148148) internal successors, (112), 27 states have internal predecessors, (112), 14 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (22), 12 states have call predecessors, (22), 14 states have call successors, (22) Word has length 1569 [2021-11-07 01:07:45,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:07:45,683 INFO L225 Difference]: With dead ends: 122462 [2021-11-07 01:07:45,683 INFO L226 Difference]: Without dead ends: 62721 [2021-11-07 01:07:46,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3171 GetRequests, 3127 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 01:07:46,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62721 states.