./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 32bit --witnessprinter.graph.data.programhash 677126e8d6773c92cc337bfe0a3ec155f49f784424155f33a8c9c24ee0a42113 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:55:13,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:55:13,756 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-32bit-Taipan_Default.epf [2023-11-19 04:55:13,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:55:13,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:55:13,793 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:55:13,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:55:13,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:55:13,795 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:55:13,796 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:55:13,796 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:55:13,797 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:55:13,798 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:55:13,799 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:55:13,800 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:55:13,800 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:55:13,804 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:55:13,805 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:55:13,806 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:55:13,807 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:55:13,807 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:55:13,808 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:55:13,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:55:13,810 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:55:13,811 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:55:13,811 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:55:13,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:55:13,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:55:13,813 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:55:13,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:55:13,814 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:55:13,815 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 04:55:13,815 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:55:13,816 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:55:13,817 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:55:13,817 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:55:13,818 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:55:13,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:55:13,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:55:13,819 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:55:13,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:55:13,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:55:13,821 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:55:13,821 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:55:13,822 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:55:13,822 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:55:13,822 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:55:13,823 INFO L153 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_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 677126e8d6773c92cc337bfe0a3ec155f49f784424155f33a8c9c24ee0a42113 [2023-11-19 04:55:14,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:55:14,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:55:14,230 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:55:14,233 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:55:14,233 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:55:14,235 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2023-11-19 04:55:17,515 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:55:17,741 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:55:17,742 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/sv-benchmarks/c/systemc/pc_sfifo_3.cil.c [2023-11-19 04:55:17,754 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/data/ddb159bfb/bcd3f42cc06d45039fe18ba44a7a6562/FLAG4c8bb7da1 [2023-11-19 04:55:18,105 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/data/ddb159bfb/bcd3f42cc06d45039fe18ba44a7a6562 [2023-11-19 04:55:18,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:55:18,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:55:18,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:55:18,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:55:18,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:55:18,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388d6032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18, skipping insertion in model container [2023-11-19 04:55:18,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,172 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:55:18,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:55:18,410 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:55:18,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:55:18,470 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:55:18,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18 WrapperNode [2023-11-19 04:55:18,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:55:18,472 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:55:18,472 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:55:18,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:55:18,480 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,490 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,516 INFO L138 Inliner]: procedures = 31, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 238 [2023-11-19 04:55:18,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:55:18,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:55:18,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:55:18,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:55:18,527 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,528 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,537 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,544 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,549 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,554 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,557 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:55:18,559 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:55:18,559 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:55:18,559 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:55:18,560 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (1/1) ... [2023-11-19 04:55:18,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:55:18,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:18,608 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:55:18,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:55:18,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:55:18,645 INFO L130 BoogieDeclarations]: Found specification of procedure error [2023-11-19 04:55:18,645 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2023-11-19 04:55:18,645 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-19 04:55:18,646 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-19 04:55:18,646 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-19 04:55:18,646 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-19 04:55:18,646 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-19 04:55:18,646 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-19 04:55:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-19 04:55:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-19 04:55:18,647 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-19 04:55:18,647 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-19 04:55:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:55:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-19 04:55:18,648 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-19 04:55:18,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:55:18,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:55:18,649 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-19 04:55:18,649 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-19 04:55:18,726 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:55:18,729 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:55:19,147 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(1 == ~q_free~0); [2023-11-19 04:55:19,148 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2023-11-19 04:55:19,169 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:55:19,422 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:55:19,422 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 04:55:19,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:19 BoogieIcfgContainer [2023-11-19 04:55:19,429 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:55:19,433 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:55:19,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:55:19,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:55:19,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:55:18" (1/3) ... [2023-11-19 04:55:19,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f632f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:19, skipping insertion in model container [2023-11-19 04:55:19,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:55:18" (2/3) ... [2023-11-19 04:55:19,441 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f632f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:55:19, skipping insertion in model container [2023-11-19 04:55:19,441 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:55:19" (3/3) ... [2023-11-19 04:55:19,443 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2023-11-19 04:55:19,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:55:19,469 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-19 04:55:19,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:55:19,541 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c3d0d4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:55:19,542 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 04:55:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 70 states have internal predecessors, (93), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-19 04:55:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-19 04:55:19,564 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:19,566 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:19,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:19,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:19,579 INFO L85 PathProgramCache]: Analyzing trace with hash 645917250, now seen corresponding path program 1 times [2023-11-19 04:55:19,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:19,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400223790] [2023-11-19 04:55:19,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:19,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:20,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:20,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:20,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400223790] [2023-11-19 04:55:20,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400223790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:20,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:20,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:55:20,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937800104] [2023-11-19 04:55:20,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:20,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:55:20,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:20,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:55:20,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:55:20,135 INFO L87 Difference]: Start difference. First operand has 92 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 70 states have internal predecessors, (93), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-19 04:55:20,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:20,525 INFO L93 Difference]: Finished difference Result 254 states and 349 transitions. [2023-11-19 04:55:20,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:55:20,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 41 [2023-11-19 04:55:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:20,547 INFO L225 Difference]: With dead ends: 254 [2023-11-19 04:55:20,548 INFO L226 Difference]: Without dead ends: 157 [2023-11-19 04:55:20,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:55:20,559 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 199 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:20,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 279 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:55:20,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-19 04:55:20,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2023-11-19 04:55:20,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 108 states have (on average 1.4074074074074074) internal successors, (152), 114 states have internal predecessors, (152), 24 states have call successors, (24), 14 states have call predecessors, (24), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 04:55:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 200 transitions. [2023-11-19 04:55:20,670 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 200 transitions. Word has length 41 [2023-11-19 04:55:20,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:20,676 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 200 transitions. [2023-11-19 04:55:20,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 4 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-19 04:55:20,677 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 200 transitions. [2023-11-19 04:55:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 04:55:20,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:20,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:20,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:55:20,684 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:20,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:20,686 INFO L85 PathProgramCache]: Analyzing trace with hash 902077662, now seen corresponding path program 1 times [2023-11-19 04:55:20,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:20,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671077129] [2023-11-19 04:55:20,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:20,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:55:20,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:20,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671077129] [2023-11-19 04:55:20,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671077129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:20,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:20,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:55:20,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064999474] [2023-11-19 04:55:20,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:20,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:55:20,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:20,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:55:20,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:55:20,912 INFO L87 Difference]: Start difference. First operand 152 states and 200 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 04:55:21,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:21,190 INFO L93 Difference]: Finished difference Result 431 states and 569 transitions. [2023-11-19 04:55:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:55:21,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 42 [2023-11-19 04:55:21,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:21,200 INFO L225 Difference]: With dead ends: 431 [2023-11-19 04:55:21,200 INFO L226 Difference]: Without dead ends: 284 [2023-11-19 04:55:21,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:55:21,213 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 193 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:21,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 280 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 04:55:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2023-11-19 04:55:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 278. [2023-11-19 04:55:21,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 200 states have (on average 1.36) internal successors, (272), 206 states have internal predecessors, (272), 44 states have call successors, (44), 28 states have call predecessors, (44), 28 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-11-19 04:55:21,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 360 transitions. [2023-11-19 04:55:21,279 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 360 transitions. Word has length 42 [2023-11-19 04:55:21,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:21,280 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 360 transitions. [2023-11-19 04:55:21,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 3 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 04:55:21,280 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 360 transitions. [2023-11-19 04:55:21,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-19 04:55:21,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:21,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:21,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:55:21,285 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:21,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:21,286 INFO L85 PathProgramCache]: Analyzing trace with hash -772425115, now seen corresponding path program 1 times [2023-11-19 04:55:21,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:21,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795963895] [2023-11-19 04:55:21,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:21,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:21,610 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 04:55:21,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:21,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795963895] [2023-11-19 04:55:21,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795963895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:21,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:21,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 04:55:21,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706156571] [2023-11-19 04:55:21,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:21,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:55:21,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:21,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:55:21,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:55:21,615 INFO L87 Difference]: Start difference. First operand 278 states and 360 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 04:55:22,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:22,200 INFO L93 Difference]: Finished difference Result 693 states and 891 transitions. [2023-11-19 04:55:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 04:55:22,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 54 [2023-11-19 04:55:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:22,208 INFO L225 Difference]: With dead ends: 693 [2023-11-19 04:55:22,208 INFO L226 Difference]: Without dead ends: 421 [2023-11-19 04:55:22,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:55:22,212 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 266 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:22,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [274 Valid, 293 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:55:22,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2023-11-19 04:55:22,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 399. [2023-11-19 04:55:22,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 287 states have (on average 1.348432055749129) internal successors, (387), 293 states have internal predecessors, (387), 64 states have call successors, (64), 42 states have call predecessors, (64), 42 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2023-11-19 04:55:22,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 515 transitions. [2023-11-19 04:55:22,337 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 515 transitions. Word has length 54 [2023-11-19 04:55:22,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:22,338 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 515 transitions. [2023-11-19 04:55:22,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 04:55:22,339 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 515 transitions. [2023-11-19 04:55:22,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 04:55:22,350 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:22,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:22,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:55:22,352 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:22,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:22,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2041469857, now seen corresponding path program 1 times [2023-11-19 04:55:22,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:22,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849771353] [2023-11-19 04:55:22,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:22,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:22,476 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:55:22,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:22,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849771353] [2023-11-19 04:55:22,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849771353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:22,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:22,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:55:22,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627744387] [2023-11-19 04:55:22,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:22,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:22,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:22,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:22,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:55:22,480 INFO L87 Difference]: Start difference. First operand 399 states and 515 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:55:22,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:22,604 INFO L93 Difference]: Finished difference Result 737 states and 951 transitions. [2023-11-19 04:55:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:22,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-11-19 04:55:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:22,611 INFO L225 Difference]: With dead ends: 737 [2023-11-19 04:55:22,611 INFO L226 Difference]: Without dead ends: 527 [2023-11-19 04:55:22,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:55:22,614 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 58 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:22,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 238 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:55:22,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2023-11-19 04:55:22,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 437. [2023-11-19 04:55:22,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 319 states have (on average 1.3510971786833856) internal successors, (431), 325 states have internal predecessors, (431), 67 states have call successors, (67), 45 states have call predecessors, (67), 45 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-11-19 04:55:22,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 565 transitions. [2023-11-19 04:55:22,688 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 565 transitions. Word has length 56 [2023-11-19 04:55:22,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:22,689 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 565 transitions. [2023-11-19 04:55:22,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:55:22,689 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 565 transitions. [2023-11-19 04:55:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-19 04:55:22,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:22,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:22,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:55:22,692 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:22,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:22,693 INFO L85 PathProgramCache]: Analyzing trace with hash -248799639, now seen corresponding path program 1 times [2023-11-19 04:55:22,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:22,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356852373] [2023-11-19 04:55:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:22,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:22,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:55:22,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:22,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356852373] [2023-11-19 04:55:22,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356852373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:22,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:22,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 04:55:22,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412485753] [2023-11-19 04:55:22,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:22,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:55:22,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:22,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:55:22,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:55:22,958 INFO L87 Difference]: Start difference. First operand 437 states and 565 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 04:55:23,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:23,630 INFO L93 Difference]: Finished difference Result 1073 states and 1380 transitions. [2023-11-19 04:55:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 04:55:23,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 56 [2023-11-19 04:55:23,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:23,638 INFO L225 Difference]: With dead ends: 1073 [2023-11-19 04:55:23,638 INFO L226 Difference]: Without dead ends: 642 [2023-11-19 04:55:23,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-11-19 04:55:23,642 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 254 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:23,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 442 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:55:23,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-11-19 04:55:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 617. [2023-11-19 04:55:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 448 states have (on average 1.3415178571428572) internal successors, (601), 454 states have internal predecessors, (601), 97 states have call successors, (97), 66 states have call predecessors, (97), 66 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-19 04:55:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 795 transitions. [2023-11-19 04:55:23,756 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 795 transitions. Word has length 56 [2023-11-19 04:55:23,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:23,756 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 795 transitions. [2023-11-19 04:55:23,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 04:55:23,757 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 795 transitions. [2023-11-19 04:55:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-19 04:55:23,758 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:23,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:23,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:55:23,759 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:23,760 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:23,760 INFO L85 PathProgramCache]: Analyzing trace with hash -928513010, now seen corresponding path program 1 times [2023-11-19 04:55:23,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:23,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433395201] [2023-11-19 04:55:23,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:23,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:23,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:55:23,821 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:23,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433395201] [2023-11-19 04:55:23,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433395201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:23,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:23,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:55:23,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674176579] [2023-11-19 04:55:23,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:23,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:23,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:23,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:23,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:55:23,824 INFO L87 Difference]: Start difference. First operand 617 states and 795 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:55:23,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:23,947 INFO L93 Difference]: Finished difference Result 1138 states and 1470 transitions. [2023-11-19 04:55:23,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:23,947 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2023-11-19 04:55:23,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:23,953 INFO L225 Difference]: With dead ends: 1138 [2023-11-19 04:55:23,953 INFO L226 Difference]: Without dead ends: 722 [2023-11-19 04:55:23,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:55:23,956 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 40 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:23,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 225 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:55:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-19 04:55:24,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 660. [2023-11-19 04:55:24,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 483 states have (on average 1.339544513457557) internal successors, (647), 489 states have internal predecessors, (647), 101 states have call successors, (101), 70 states have call predecessors, (101), 70 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-19 04:55:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 849 transitions. [2023-11-19 04:55:24,047 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 849 transitions. Word has length 57 [2023-11-19 04:55:24,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:24,048 INFO L495 AbstractCegarLoop]: Abstraction has 660 states and 849 transitions. [2023-11-19 04:55:24,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-19 04:55:24,048 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 849 transitions. [2023-11-19 04:55:24,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-19 04:55:24,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:24,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:24,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:55:24,051 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:24,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:24,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1727023687, now seen corresponding path program 1 times [2023-11-19 04:55:24,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:24,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042423404] [2023-11-19 04:55:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:24,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:24,443 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 04:55:24,444 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:24,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042423404] [2023-11-19 04:55:24,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042423404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:24,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659363764] [2023-11-19 04:55:24,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:24,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:24,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:24,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:24,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:55:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:24,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:55:24,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:24,814 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:55:24,814 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:24,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659363764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:24,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:55:24,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [11] total 12 [2023-11-19 04:55:24,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463056558] [2023-11-19 04:55:24,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:24,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:24,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:24,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:24,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:55:24,818 INFO L87 Difference]: Start difference. First operand 660 states and 849 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 04:55:24,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:24,944 INFO L93 Difference]: Finished difference Result 660 states and 849 transitions. [2023-11-19 04:55:24,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:24,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 74 [2023-11-19 04:55:24,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:24,951 INFO L225 Difference]: With dead ends: 660 [2023-11-19 04:55:24,951 INFO L226 Difference]: Without dead ends: 659 [2023-11-19 04:55:24,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:55:24,953 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:24,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 92 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:55:24,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-11-19 04:55:25,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2023-11-19 04:55:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 483 states have (on average 1.320910973084886) internal successors, (638), 488 states have internal predecessors, (638), 101 states have call successors, (101), 70 states have call predecessors, (101), 70 states have return successors, (101), 101 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-19 04:55:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 840 transitions. [2023-11-19 04:55:25,049 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 840 transitions. Word has length 74 [2023-11-19 04:55:25,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:25,050 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 840 transitions. [2023-11-19 04:55:25,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 04:55:25,050 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 840 transitions. [2023-11-19 04:55:25,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-19 04:55:25,052 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:25,052 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:25,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:25,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:25,267 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:25,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:25,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1998127076, now seen corresponding path program 1 times [2023-11-19 04:55:25,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:25,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746219797] [2023-11-19 04:55:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:25,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:25,647 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-19 04:55:25,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:25,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746219797] [2023-11-19 04:55:25,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746219797] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:25,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942084149] [2023-11-19 04:55:25,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:25,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:25,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:25,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:25,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 04:55:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:25,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:55:25,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-19 04:55:25,970 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:25,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942084149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:25,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:55:25,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [11] total 12 [2023-11-19 04:55:25,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592099009] [2023-11-19 04:55:25,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:25,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:25,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:25,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:55:25,974 INFO L87 Difference]: Start difference. First operand 659 states and 840 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 04:55:26,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:26,193 INFO L93 Difference]: Finished difference Result 1945 states and 2473 transitions. [2023-11-19 04:55:26,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:26,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 75 [2023-11-19 04:55:26,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:26,205 INFO L225 Difference]: With dead ends: 1945 [2023-11-19 04:55:26,205 INFO L226 Difference]: Without dead ends: 1292 [2023-11-19 04:55:26,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-19 04:55:26,209 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 57 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:26,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 197 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:55:26,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1292 states. [2023-11-19 04:55:26,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1292 to 1288. [2023-11-19 04:55:26,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 946 states have (on average 1.299154334038055) internal successors, (1229), 950 states have internal predecessors, (1229), 198 states have call successors, (198), 140 states have call predecessors, (198), 140 states have return successors, (198), 198 states have call predecessors, (198), 198 states have call successors, (198) [2023-11-19 04:55:26,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1625 transitions. [2023-11-19 04:55:26,419 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1625 transitions. Word has length 75 [2023-11-19 04:55:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:26,419 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1625 transitions. [2023-11-19 04:55:26,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2023-11-19 04:55:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1625 transitions. [2023-11-19 04:55:26,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-19 04:55:26,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:26,422 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:26,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:26,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:26,641 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:26,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash 877811657, now seen corresponding path program 1 times [2023-11-19 04:55:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:26,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312959564] [2023-11-19 04:55:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:27,274 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 04:55:27,275 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312959564] [2023-11-19 04:55:27,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312959564] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:27,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497498011] [2023-11-19 04:55:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:27,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:27,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:27,277 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:27,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 04:55:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:27,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:55:27,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:27,608 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 04:55:27,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497498011] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:27,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:55:27,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [13] total 14 [2023-11-19 04:55:27,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720081546] [2023-11-19 04:55:27,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:27,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:27,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:27,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:27,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:55:27,612 INFO L87 Difference]: Start difference. First operand 1288 states and 1625 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 04:55:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:27,864 INFO L93 Difference]: Finished difference Result 3443 states and 4382 transitions. [2023-11-19 04:55:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:27,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 103 [2023-11-19 04:55:27,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:27,884 INFO L225 Difference]: With dead ends: 3443 [2023-11-19 04:55:27,884 INFO L226 Difference]: Without dead ends: 2543 [2023-11-19 04:55:27,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:55:27,889 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 57 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:27,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 180 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:55:27,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2023-11-19 04:55:28,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2539. [2023-11-19 04:55:28,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2539 states, 1872 states have (on average 1.295940170940171) internal successors, (2426), 1876 states have internal predecessors, (2426), 383 states have call successors, (383), 280 states have call predecessors, (383), 280 states have return successors, (383), 383 states have call predecessors, (383), 383 states have call successors, (383) [2023-11-19 04:55:28,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2539 states to 2539 states and 3192 transitions. [2023-11-19 04:55:28,231 INFO L78 Accepts]: Start accepts. Automaton has 2539 states and 3192 transitions. Word has length 103 [2023-11-19 04:55:28,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:28,232 INFO L495 AbstractCegarLoop]: Abstraction has 2539 states and 3192 transitions. [2023-11-19 04:55:28,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2023-11-19 04:55:28,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2539 states and 3192 transitions. [2023-11-19 04:55:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 04:55:28,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:28,235 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:28,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:28,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:28,457 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:28,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:28,458 INFO L85 PathProgramCache]: Analyzing trace with hash -669746692, now seen corresponding path program 1 times [2023-11-19 04:55:28,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:28,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352281911] [2023-11-19 04:55:28,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:28,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:29,075 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-19 04:55:29,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:29,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352281911] [2023-11-19 04:55:29,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352281911] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:29,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148502147] [2023-11-19 04:55:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:29,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:29,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:29,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:29,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 04:55:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:29,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:55:29,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-19 04:55:29,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:29,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148502147] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:29,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:55:29,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [13] total 14 [2023-11-19 04:55:29,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243093146] [2023-11-19 04:55:29,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:29,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:29,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:29,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:55:29,418 INFO L87 Difference]: Start difference. First operand 2539 states and 3192 transitions. Second operand has 3 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-19 04:55:29,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:29,682 INFO L93 Difference]: Finished difference Result 2539 states and 3192 transitions. [2023-11-19 04:55:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:29,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 104 [2023-11-19 04:55:29,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:29,702 INFO L225 Difference]: With dead ends: 2539 [2023-11-19 04:55:29,702 INFO L226 Difference]: Without dead ends: 2538 [2023-11-19 04:55:29,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:55:29,705 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:29,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 91 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:55:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2023-11-19 04:55:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2538. [2023-11-19 04:55:30,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2538 states, 1872 states have (on average 1.2873931623931625) internal successors, (2410), 1875 states have internal predecessors, (2410), 383 states have call successors, (383), 280 states have call predecessors, (383), 280 states have return successors, (383), 383 states have call predecessors, (383), 383 states have call successors, (383) [2023-11-19 04:55:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2538 states to 2538 states and 3176 transitions. [2023-11-19 04:55:30,032 INFO L78 Accepts]: Start accepts. Automaton has 2538 states and 3176 transitions. Word has length 104 [2023-11-19 04:55:30,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:30,033 INFO L495 AbstractCegarLoop]: Abstraction has 2538 states and 3176 transitions. [2023-11-19 04:55:30,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-19 04:55:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 2538 states and 3176 transitions. [2023-11-19 04:55:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-19 04:55:30,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:30,038 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:30,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:30,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 04:55:30,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:30,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:30,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1094755373, now seen corresponding path program 1 times [2023-11-19 04:55:30,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:30,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904784152] [2023-11-19 04:55:30,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:30,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-19 04:55:30,352 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:30,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904784152] [2023-11-19 04:55:30,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904784152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:30,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:30,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:55:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670390622] [2023-11-19 04:55:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:30,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:55:30,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:30,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:55:30,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:55:30,355 INFO L87 Difference]: Start difference. First operand 2538 states and 3176 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-19 04:55:30,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:30,737 INFO L93 Difference]: Finished difference Result 4869 states and 6185 transitions. [2023-11-19 04:55:30,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:55:30,738 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 104 [2023-11-19 04:55:30,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:30,758 INFO L225 Difference]: With dead ends: 4869 [2023-11-19 04:55:30,759 INFO L226 Difference]: Without dead ends: 3096 [2023-11-19 04:55:30,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:55:30,765 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 106 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:30,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 198 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:55:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3096 states. [2023-11-19 04:55:31,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3096 to 3096. [2023-11-19 04:55:31,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3096 states, 2295 states have (on average 1.2762527233115468) internal successors, (2929), 2298 states have internal predecessors, (2929), 437 states have call successors, (437), 361 states have call predecessors, (437), 361 states have return successors, (437), 437 states have call predecessors, (437), 437 states have call successors, (437) [2023-11-19 04:55:31,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3096 states to 3096 states and 3803 transitions. [2023-11-19 04:55:31,173 INFO L78 Accepts]: Start accepts. Automaton has 3096 states and 3803 transitions. Word has length 104 [2023-11-19 04:55:31,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:31,173 INFO L495 AbstractCegarLoop]: Abstraction has 3096 states and 3803 transitions. [2023-11-19 04:55:31,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (15), 1 states have call predecessors, (15), 2 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-11-19 04:55:31,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3096 states and 3803 transitions. [2023-11-19 04:55:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-19 04:55:31,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:31,180 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:31,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 04:55:31,180 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:31,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:31,181 INFO L85 PathProgramCache]: Analyzing trace with hash 712689312, now seen corresponding path program 1 times [2023-11-19 04:55:31,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:31,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190287762] [2023-11-19 04:55:31,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:31,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:31,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-19 04:55:31,685 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:31,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190287762] [2023-11-19 04:55:31,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190287762] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:31,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981614986] [2023-11-19 04:55:31,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:31,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:31,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:31,688 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:31,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 04:55:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:31,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:55:31,834 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:32,012 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-19 04:55:32,012 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:32,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981614986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:32,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:55:32,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [13] total 14 [2023-11-19 04:55:32,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161033328] [2023-11-19 04:55:32,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:32,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:32,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:32,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:32,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:55:32,019 INFO L87 Difference]: Start difference. First operand 3096 states and 3803 transitions. Second operand has 3 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-19 04:55:32,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:32,486 INFO L93 Difference]: Finished difference Result 5225 states and 6467 transitions. [2023-11-19 04:55:32,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:32,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 105 [2023-11-19 04:55:32,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:32,517 INFO L225 Difference]: With dead ends: 5225 [2023-11-19 04:55:32,518 INFO L226 Difference]: Without dead ends: 5224 [2023-11-19 04:55:32,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:55:32,521 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 41 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:32,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 175 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:55:32,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2023-11-19 04:55:33,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 5222. [2023-11-19 04:55:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 3881 states have (on average 1.2854934295284721) internal successors, (4989), 3884 states have internal predecessors, (4989), 731 states have call successors, (731), 607 states have call predecessors, (731), 607 states have return successors, (731), 731 states have call predecessors, (731), 731 states have call successors, (731) [2023-11-19 04:55:33,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 6451 transitions. [2023-11-19 04:55:33,061 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 6451 transitions. Word has length 105 [2023-11-19 04:55:33,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:33,062 INFO L495 AbstractCegarLoop]: Abstraction has 5222 states and 6451 transitions. [2023-11-19 04:55:33,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 20.5) internal successors, (41), 2 states have internal predecessors, (41), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-19 04:55:33,062 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 6451 transitions. [2023-11-19 04:55:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-19 04:55:33,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:33,065 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:33,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:33,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:33,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:33,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:33,288 INFO L85 PathProgramCache]: Analyzing trace with hash -433335381, now seen corresponding path program 1 times [2023-11-19 04:55:33,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:33,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482460083] [2023-11-19 04:55:33,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:33,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:33,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:33,343 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-19 04:55:33,343 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:33,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482460083] [2023-11-19 04:55:33,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482460083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:33,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:55:33,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 04:55:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953834084] [2023-11-19 04:55:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:33,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:55:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:33,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:55:33,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:55:33,346 INFO L87 Difference]: Start difference. First operand 5222 states and 6451 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-19 04:55:34,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:34,469 INFO L93 Difference]: Finished difference Result 12248 states and 15471 transitions. [2023-11-19 04:55:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 04:55:34,470 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 105 [2023-11-19 04:55:34,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:34,540 INFO L225 Difference]: With dead ends: 12248 [2023-11-19 04:55:34,541 INFO L226 Difference]: Without dead ends: 8607 [2023-11-19 04:55:34,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 04:55:34,553 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 175 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:34,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 263 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:55:34,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8607 states. [2023-11-19 04:55:35,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8607 to 8492. [2023-11-19 04:55:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8492 states, 6243 states have (on average 1.2431523306102834) internal successors, (7761), 6246 states have internal predecessors, (7761), 1225 states have call successors, (1225), 1021 states have call predecessors, (1225), 1021 states have return successors, (1225), 1225 states have call predecessors, (1225), 1225 states have call successors, (1225) [2023-11-19 04:55:35,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8492 states to 8492 states and 10211 transitions. [2023-11-19 04:55:35,432 INFO L78 Accepts]: Start accepts. Automaton has 8492 states and 10211 transitions. Word has length 105 [2023-11-19 04:55:35,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:35,432 INFO L495 AbstractCegarLoop]: Abstraction has 8492 states and 10211 transitions. [2023-11-19 04:55:35,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2023-11-19 04:55:35,433 INFO L276 IsEmpty]: Start isEmpty. Operand 8492 states and 10211 transitions. [2023-11-19 04:55:35,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 04:55:35,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:35,436 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:35,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 04:55:35,437 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:35,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:35,439 INFO L85 PathProgramCache]: Analyzing trace with hash -251508969, now seen corresponding path program 1 times [2023-11-19 04:55:35,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:35,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269031603] [2023-11-19 04:55:35,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:35,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:35,970 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 04:55:35,971 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:35,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269031603] [2023-11-19 04:55:35,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269031603] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:35,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634470136] [2023-11-19 04:55:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:35,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:35,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:35,976 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:35,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 04:55:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:36,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:55:36,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:36,293 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 04:55:36,294 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:36,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634470136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:36,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:55:36,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [15] total 16 [2023-11-19 04:55:36,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302160349] [2023-11-19 04:55:36,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:36,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:36,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:36,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:55:36,297 INFO L87 Difference]: Start difference. First operand 8492 states and 10211 transitions. Second operand has 3 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-19 04:55:37,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:37,200 INFO L93 Difference]: Finished difference Result 8492 states and 10211 transitions. [2023-11-19 04:55:37,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:37,200 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 106 [2023-11-19 04:55:37,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:37,249 INFO L225 Difference]: With dead ends: 8492 [2023-11-19 04:55:37,250 INFO L226 Difference]: Without dead ends: 8491 [2023-11-19 04:55:37,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:55:37,256 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:37,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 90 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:55:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8491 states. [2023-11-19 04:55:38,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8491 to 8491. [2023-11-19 04:55:38,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8491 states, 6243 states have (on average 1.2386673073842704) internal successors, (7733), 6245 states have internal predecessors, (7733), 1225 states have call successors, (1225), 1021 states have call predecessors, (1225), 1021 states have return successors, (1225), 1225 states have call predecessors, (1225), 1225 states have call successors, (1225) [2023-11-19 04:55:38,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8491 states to 8491 states and 10183 transitions. [2023-11-19 04:55:38,264 INFO L78 Accepts]: Start accepts. Automaton has 8491 states and 10183 transitions. Word has length 106 [2023-11-19 04:55:38,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:38,267 INFO L495 AbstractCegarLoop]: Abstraction has 8491 states and 10183 transitions. [2023-11-19 04:55:38,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-19 04:55:38,267 INFO L276 IsEmpty]: Start isEmpty. Operand 8491 states and 10183 transitions. [2023-11-19 04:55:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 04:55:38,269 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:38,270 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:38,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:38,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:38,491 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:38,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:38,491 INFO L85 PathProgramCache]: Analyzing trace with hash 793156787, now seen corresponding path program 1 times [2023-11-19 04:55:38,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:38,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010970206] [2023-11-19 04:55:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:38,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:38,967 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 19 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-19 04:55:38,967 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:38,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010970206] [2023-11-19 04:55:38,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010970206] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:38,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123639786] [2023-11-19 04:55:38,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:38,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:38,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:38,969 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:38,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 04:55:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:39,081 INFO L262 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:55:39,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-19 04:55:39,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:39,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123639786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:39,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:55:39,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [15] total 16 [2023-11-19 04:55:39,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91198269] [2023-11-19 04:55:39,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:39,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:39,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:55:39,264 INFO L87 Difference]: Start difference. First operand 8491 states and 10183 transitions. Second operand has 3 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-19 04:55:40,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:40,698 INFO L93 Difference]: Finished difference Result 15401 states and 18491 transitions. [2023-11-19 04:55:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:40,698 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 107 [2023-11-19 04:55:40,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:40,751 INFO L225 Difference]: With dead ends: 15401 [2023-11-19 04:55:40,751 INFO L226 Difference]: Without dead ends: 15400 [2023-11-19 04:55:40,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:55:40,759 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 37 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:40,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 172 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:55:40,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15400 states. [2023-11-19 04:55:42,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15400 to 15399. [2023-11-19 04:55:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15399 states, 11335 states have (on average 1.2383767093074547) internal successors, (14037), 11337 states have internal predecessors, (14037), 2213 states have call successors, (2213), 1849 states have call predecessors, (2213), 1849 states have return successors, (2213), 2213 states have call predecessors, (2213), 2213 states have call successors, (2213) [2023-11-19 04:55:42,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15399 states to 15399 states and 18463 transitions. [2023-11-19 04:55:42,519 INFO L78 Accepts]: Start accepts. Automaton has 15399 states and 18463 transitions. Word has length 107 [2023-11-19 04:55:42,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:42,520 INFO L495 AbstractCegarLoop]: Abstraction has 15399 states and 18463 transitions. [2023-11-19 04:55:42,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 1 states have call successors, (13), 1 states have call predecessors, (13), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2023-11-19 04:55:42,521 INFO L276 IsEmpty]: Start isEmpty. Operand 15399 states and 18463 transitions. [2023-11-19 04:55:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-19 04:55:42,531 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:42,532 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:42,558 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:42,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 04:55:42,753 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:42,754 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:42,754 INFO L85 PathProgramCache]: Analyzing trace with hash -720553625, now seen corresponding path program 1 times [2023-11-19 04:55:42,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:42,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097944198] [2023-11-19 04:55:42,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:42,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:42,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 37 proven. 32 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-11-19 04:55:43,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097944198] [2023-11-19 04:55:43,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097944198] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:43,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208740637] [2023-11-19 04:55:43,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:43,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:43,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:43,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:43,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:55:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:43,569 INFO L262 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 04:55:43,575 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:43,682 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 185 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-19 04:55:43,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:43,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208740637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:43,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:55:43,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2023-11-19 04:55:43,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867054034] [2023-11-19 04:55:43,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:43,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:43,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:43,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:43,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:55:43,689 INFO L87 Difference]: Start difference. First operand 15399 states and 18463 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-19 04:55:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:44,590 INFO L93 Difference]: Finished difference Result 21444 states and 25939 transitions. [2023-11-19 04:55:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:44,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 170 [2023-11-19 04:55:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:44,621 INFO L225 Difference]: With dead ends: 21444 [2023-11-19 04:55:44,622 INFO L226 Difference]: Without dead ends: 8790 [2023-11-19 04:55:44,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-19 04:55:44,652 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:44,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 80 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:55:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8790 states. [2023-11-19 04:55:45,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8790 to 8738. [2023-11-19 04:55:45,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8738 states, 6319 states have (on average 1.1873714195284064) internal successors, (7503), 6320 states have internal predecessors, (7503), 1319 states have call successors, (1319), 1099 states have call predecessors, (1319), 1099 states have return successors, (1319), 1319 states have call predecessors, (1319), 1319 states have call successors, (1319) [2023-11-19 04:55:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8738 states to 8738 states and 10141 transitions. [2023-11-19 04:55:45,583 INFO L78 Accepts]: Start accepts. Automaton has 8738 states and 10141 transitions. Word has length 170 [2023-11-19 04:55:45,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:45,584 INFO L495 AbstractCegarLoop]: Abstraction has 8738 states and 10141 transitions. [2023-11-19 04:55:45,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2023-11-19 04:55:45,584 INFO L276 IsEmpty]: Start isEmpty. Operand 8738 states and 10141 transitions. [2023-11-19 04:55:45,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2023-11-19 04:55:45,593 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:45,594 INFO L195 NwaCegarLoop]: trace histogram [9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:45,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:45,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 04:55:45,808 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:45,808 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:45,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1145297149, now seen corresponding path program 1 times [2023-11-19 04:55:45,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:45,809 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536725886] [2023-11-19 04:55:45,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:45,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 36 proven. 35 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 04:55:46,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536725886] [2023-11-19 04:55:46,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536725886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:46,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551838521] [2023-11-19 04:55:46,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:46,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:46,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:46,413 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:46,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 04:55:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:46,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:55:46,561 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:46,656 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-19 04:55:46,656 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:46,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551838521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:46,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:55:46,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2023-11-19 04:55:46,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746192557] [2023-11-19 04:55:46,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:46,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:46,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:46,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:46,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:55:46,659 INFO L87 Difference]: Start difference. First operand 8738 states and 10141 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-19 04:55:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:47,741 INFO L93 Difference]: Finished difference Result 14675 states and 16993 transitions. [2023-11-19 04:55:47,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:47,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 174 [2023-11-19 04:55:47,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:47,774 INFO L225 Difference]: With dead ends: 14675 [2023-11-19 04:55:47,775 INFO L226 Difference]: Without dead ends: 10710 [2023-11-19 04:55:47,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:55:47,785 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 31 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:47,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 234 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:55:47,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10710 states. [2023-11-19 04:55:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10710 to 10662. [2023-11-19 04:55:48,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10662 states, 7703 states have (on average 1.1786317019343113) internal successors, (9079), 7704 states have internal predecessors, (9079), 1613 states have call successors, (1613), 1345 states have call predecessors, (1613), 1345 states have return successors, (1613), 1613 states have call predecessors, (1613), 1613 states have call successors, (1613) [2023-11-19 04:55:48,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10662 states to 10662 states and 12305 transitions. [2023-11-19 04:55:48,795 INFO L78 Accepts]: Start accepts. Automaton has 10662 states and 12305 transitions. Word has length 174 [2023-11-19 04:55:48,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:48,796 INFO L495 AbstractCegarLoop]: Abstraction has 10662 states and 12305 transitions. [2023-11-19 04:55:48,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2023-11-19 04:55:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 10662 states and 12305 transitions. [2023-11-19 04:55:48,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-19 04:55:48,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:48,825 INFO L195 NwaCegarLoop]: trace histogram [13, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2023-11-19 04:55:48,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:49,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 04:55:49,046 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:49,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash 518403063, now seen corresponding path program 1 times [2023-11-19 04:55:49,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:49,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384250849] [2023-11-19 04:55:49,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:49,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 59 proven. 51 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2023-11-19 04:55:49,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:49,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384250849] [2023-11-19 04:55:49,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384250849] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:49,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098111852] [2023-11-19 04:55:49,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:49,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:49,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:49,968 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:49,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 04:55:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:50,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:55:50,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 243 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2023-11-19 04:55:50,229 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:55:50,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098111852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:55:50,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:55:50,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2023-11-19 04:55:50,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49164619] [2023-11-19 04:55:50,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:55:50,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:55:50,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:55:50,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:55:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:55:50,233 INFO L87 Difference]: Start difference. First operand 10662 states and 12305 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-19 04:55:51,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:55:51,254 INFO L93 Difference]: Finished difference Result 16635 states and 19429 transitions. [2023-11-19 04:55:51,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:55:51,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 236 [2023-11-19 04:55:51,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:55:51,287 INFO L225 Difference]: With dead ends: 16635 [2023-11-19 04:55:51,287 INFO L226 Difference]: Without dead ends: 8802 [2023-11-19 04:55:51,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-11-19 04:55:51,308 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 59 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:55:51,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 217 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:55:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8802 states. [2023-11-19 04:55:52,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8802 to 8738. [2023-11-19 04:55:52,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8738 states, 6319 states have (on average 1.166482038297199) internal successors, (7371), 6320 states have internal predecessors, (7371), 1319 states have call successors, (1319), 1099 states have call predecessors, (1319), 1099 states have return successors, (1319), 1319 states have call predecessors, (1319), 1319 states have call successors, (1319) [2023-11-19 04:55:52,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8738 states to 8738 states and 10009 transitions. [2023-11-19 04:55:52,441 INFO L78 Accepts]: Start accepts. Automaton has 8738 states and 10009 transitions. Word has length 236 [2023-11-19 04:55:52,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:55:52,442 INFO L495 AbstractCegarLoop]: Abstraction has 8738 states and 10009 transitions. [2023-11-19 04:55:52,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2023-11-19 04:55:52,442 INFO L276 IsEmpty]: Start isEmpty. Operand 8738 states and 10009 transitions. [2023-11-19 04:55:52,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2023-11-19 04:55:52,462 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:55:52,463 INFO L195 NwaCegarLoop]: trace histogram [13, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2023-11-19 04:55:52,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 04:55:52,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 04:55:52,676 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-19 04:55:52,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:55:52,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1380127242, now seen corresponding path program 1 times [2023-11-19 04:55:52,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:55:52,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439562127] [2023-11-19 04:55:52,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:52,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:55:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 59 proven. 51 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2023-11-19 04:55:53,515 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:55:53,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439562127] [2023-11-19 04:55:53,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439562127] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:55:53,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411037923] [2023-11-19 04:55:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:55:53,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:55:53,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:55:53,520 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:55:53,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a51e828-6ed1-4f7c-a68f-fbf9e0ca081c/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 04:55:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:55:53,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 736 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:55:53,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:55:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 278 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-11-19 04:55:54,114 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:55:54,417 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked. [2023-11-19 04:55:54,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411037923] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:55:54,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [810239848] [2023-11-19 04:55:54,461 INFO L159 IcfgInterpreter]: Started Sifa with 66 locations of interest [2023-11-19 04:55:54,461 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:55:54,466 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:55:54,472 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:55:54,472 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs