./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/readlink-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/readlink-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh --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 64bit --witnessprinter.graph.data.programhash 13deb6f52d025fc244c9b82340ddcdc8e3861c427873ebfb2833f80ffdb30e1c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 15:23:45,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 15:23:45,542 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 15:23:45,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 15:23:45,547 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 15:23:45,569 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 15:23:45,570 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 15:23:45,570 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 15:23:45,571 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 15:23:45,571 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 15:23:45,572 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 15:23:45,572 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 15:23:45,573 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 15:23:45,573 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 15:23:45,574 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 15:23:45,574 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 15:23:45,575 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 15:23:45,575 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 15:23:45,576 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 15:23:45,576 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 15:23:45,577 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 15:23:45,579 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 15:23:45,579 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 15:23:45,580 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 15:23:45,580 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 15:23:45,580 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 15:23:45,581 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 15:23:45,581 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 15:23:45,581 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 15:23:45,582 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 15:23:45,582 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 15:23:45,582 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 15:23:45,583 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 15:23:45,583 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 15:23:45,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 15:23:45,583 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 15:23:45,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:23:45,584 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 15:23:45,584 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 15:23:45,584 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 15:23:45,584 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 15:23:45,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 15:23:45,585 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 15:23:45,585 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 15:23:45,585 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 15:23:45,585 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 15:23:45,586 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_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13deb6f52d025fc244c9b82340ddcdc8e3861c427873ebfb2833f80ffdb30e1c [2023-12-02 15:23:45,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 15:23:45,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 15:23:45,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 15:23:45,839 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 15:23:45,840 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 15:23:45,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/busybox-1.22.0/readlink-1.i [2023-12-02 15:23:48,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 15:23:48,906 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 15:23:48,906 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/sv-benchmarks/c/busybox-1.22.0/readlink-1.i [2023-12-02 15:23:48,933 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/data/20aebc135/f2e670fa13294b4b8ad95e472a03fdfb/FLAGe20e7335a [2023-12-02 15:23:48,944 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/data/20aebc135/f2e670fa13294b4b8ad95e472a03fdfb [2023-12-02 15:23:48,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 15:23:48,948 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 15:23:48,949 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 15:23:48,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 15:23:48,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 15:23:48,953 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:23:48" (1/1) ... [2023-12-02 15:23:48,954 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d3ac375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:48, skipping insertion in model container [2023-12-02 15:23:48,954 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:23:48" (1/1) ... [2023-12-02 15:23:49,023 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 15:23:50,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:23:50,145 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 15:23:50,307 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 15:23:50,485 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:23:50,486 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:23:50,486 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 15:23:50,493 INFO L206 MainTranslator]: Completed translation [2023-12-02 15:23:50,494 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50 WrapperNode [2023-12-02 15:23:50,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 15:23:50,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 15:23:50,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 15:23:50,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 15:23:50,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,549 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,627 INFO L138 Inliner]: procedures = 575, calls = 398, calls flagged for inlining = 29, calls inlined = 27, statements flattened = 1696 [2023-12-02 15:23:50,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 15:23:50,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 15:23:50,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 15:23:50,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 15:23:50,639 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,728 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,737 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,753 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 15:23:50,754 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 15:23:50,754 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 15:23:50,754 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 15:23:50,755 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (1/1) ... [2023-12-02 15:23:50,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 15:23:50,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:50,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 15:23:50,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 15:23:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-12-02 15:23:50,819 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-12-02 15:23:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-12-02 15:23:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 15:23:50,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 15:23:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-12-02 15:23:50,820 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-12-02 15:23:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 15:23:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 15:23:50,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 15:23:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-12-02 15:23:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 15:23:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 15:23:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 15:23:50,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 15:23:50,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 15:23:50,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 15:23:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-12-02 15:23:50,822 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-12-02 15:23:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 15:23:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 15:23:50,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 15:23:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 15:23:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 15:23:50,823 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 15:23:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 15:23:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 15:23:50,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 15:23:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 15:23:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-12-02 15:23:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-12-02 15:23:50,824 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-12-02 15:23:50,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 15:23:51,211 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 15:23:51,213 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 15:23:52,613 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 15:23:53,125 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 15:23:53,126 INFO L309 CfgBuilder]: Removed 28 assume(true) statements. [2023-12-02 15:23:53,127 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:23:53 BoogieIcfgContainer [2023-12-02 15:23:53,128 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 15:23:53,130 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 15:23:53,130 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 15:23:53,133 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 15:23:53,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:23:48" (1/3) ... [2023-12-02 15:23:53,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d5e179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:23:53, skipping insertion in model container [2023-12-02 15:23:53,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:23:50" (2/3) ... [2023-12-02 15:23:53,135 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d5e179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:23:53, skipping insertion in model container [2023-12-02 15:23:53,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:23:53" (3/3) ... [2023-12-02 15:23:53,136 INFO L112 eAbstractionObserver]: Analyzing ICFG readlink-1.i [2023-12-02 15:23:53,155 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 15:23:53,155 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 72 error locations. [2023-12-02 15:23:53,213 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 15:23:53,220 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;@1cadb6fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 15:23:53,221 INFO L358 AbstractCegarLoop]: Starting to check reachability of 72 error locations. [2023-12-02 15:23:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand has 393 states, 288 states have (on average 1.7118055555555556) internal successors, (493), 360 states have internal predecessors, (493), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-12-02 15:23:53,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 15:23:53,234 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:53,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 15:23:53,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:23:53,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1641988, now seen corresponding path program 1 times [2023-12-02 15:23:53,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:53,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355340041] [2023-12-02 15:23:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:53,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:23:53,624 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:53,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355340041] [2023-12-02 15:23:53,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355340041] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:53,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:23:53,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 15:23:53,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068920548] [2023-12-02 15:23:53,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:53,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:23:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:53,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:23:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:23:53,664 INFO L87 Difference]: Start difference. First operand has 393 states, 288 states have (on average 1.7118055555555556) internal successors, (493), 360 states have internal predecessors, (493), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:23:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:54,009 INFO L93 Difference]: Finished difference Result 779 states and 1089 transitions. [2023-12-02 15:23:54,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:23:54,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 15:23:54,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:54,025 INFO L225 Difference]: With dead ends: 779 [2023-12-02 15:23:54,025 INFO L226 Difference]: Without dead ends: 388 [2023-12-02 15:23:54,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:23:54,035 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:54,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 870 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:23:54,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-02 15:23:54,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2023-12-02 15:23:54,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 285 states have (on average 1.6350877192982456) internal successors, (466), 361 states have internal predecessors, (466), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:23:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 510 transitions. [2023-12-02 15:23:54,102 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 510 transitions. Word has length 3 [2023-12-02 15:23:54,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:54,102 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 510 transitions. [2023-12-02 15:23:54,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:23:54,102 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 510 transitions. [2023-12-02 15:23:54,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 15:23:54,134 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:54,135 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-12-02 15:23:54,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 15:23:54,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:23:54,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1672175617, now seen corresponding path program 1 times [2023-12-02 15:23:54,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:54,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256936642] [2023-12-02 15:23:54,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:54,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:23:54,309 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:54,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256936642] [2023-12-02 15:23:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256936642] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:23:54,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177996597] [2023-12-02 15:23:54,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:54,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:54,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:54,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:54,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 15:23:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:54,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:23:54,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:23:54,629 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:54,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177996597] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:54,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:23:54,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-12-02 15:23:54,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512082773] [2023-12-02 15:23:54,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:54,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:23:54,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:54,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:23:54,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:23:54,633 INFO L87 Difference]: Start difference. First operand 388 states and 510 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:23:54,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:54,875 INFO L93 Difference]: Finished difference Result 388 states and 510 transitions. [2023-12-02 15:23:54,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:23:54,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 15:23:54,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:54,879 INFO L225 Difference]: With dead ends: 388 [2023-12-02 15:23:54,879 INFO L226 Difference]: Without dead ends: 387 [2023-12-02 15:23:54,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:23:54,881 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 3 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:54,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 866 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:23:54,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-12-02 15:23:54,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2023-12-02 15:23:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 285 states have (on average 1.631578947368421) internal successors, (465), 360 states have internal predecessors, (465), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:23:54,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 509 transitions. [2023-12-02 15:23:54,906 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 509 transitions. Word has length 6 [2023-12-02 15:23:54,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:54,906 INFO L495 AbstractCegarLoop]: Abstraction has 387 states and 509 transitions. [2023-12-02 15:23:54,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:23:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 509 transitions. [2023-12-02 15:23:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 15:23:54,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:54,907 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-12-02 15:23:54,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 15:23:55,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 15:23:55,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:23:55,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:55,116 INFO L85 PathProgramCache]: Analyzing trace with hash 297836929, now seen corresponding path program 1 times [2023-12-02 15:23:55,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:55,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930101673] [2023-12-02 15:23:55,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:55,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:23:55,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:55,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930101673] [2023-12-02 15:23:55,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930101673] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:55,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:23:55,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:23:55,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397707988] [2023-12-02 15:23:55,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:55,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:23:55,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:55,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:23:55,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:23:55,245 INFO L87 Difference]: Start difference. First operand 387 states and 509 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:23:55,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:55,498 INFO L93 Difference]: Finished difference Result 387 states and 509 transitions. [2023-12-02 15:23:55,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:23:55,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 15:23:55,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:55,502 INFO L225 Difference]: With dead ends: 387 [2023-12-02 15:23:55,502 INFO L226 Difference]: Without dead ends: 386 [2023-12-02 15:23:55,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:23:55,504 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 0 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 866 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:55,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 866 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:23:55,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-02 15:23:55,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 384. [2023-12-02 15:23:55,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 283 states have (on average 1.6325088339222615) internal successors, (462), 357 states have internal predecessors, (462), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:23:55,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 506 transitions. [2023-12-02 15:23:55,521 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 506 transitions. Word has length 7 [2023-12-02 15:23:55,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:55,521 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 506 transitions. [2023-12-02 15:23:55,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 15:23:55,522 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 506 transitions. [2023-12-02 15:23:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 15:23:55,522 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:55,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:55,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 15:23:55,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:23:55,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:55,523 INFO L85 PathProgramCache]: Analyzing trace with hash -236291331, now seen corresponding path program 1 times [2023-12-02 15:23:55,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:55,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392592583] [2023-12-02 15:23:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:55,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:23:55,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:55,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392592583] [2023-12-02 15:23:55,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392592583] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:23:55,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924121004] [2023-12-02 15:23:55,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:55,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:55,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:55,671 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:55,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 15:23:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:55,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:23:55,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:55,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:23:55,934 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:23:55,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924121004] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:23:55,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:23:55,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:23:55,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722215237] [2023-12-02 15:23:55,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:23:55,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:23:55,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:23:55,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:23:55,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:23:55,936 INFO L87 Difference]: Start difference. First operand 384 states and 506 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:23:56,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:23:56,147 INFO L93 Difference]: Finished difference Result 384 states and 506 transitions. [2023-12-02 15:23:56,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:23:56,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-02 15:23:56,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:23:56,151 INFO L225 Difference]: With dead ends: 384 [2023-12-02 15:23:56,151 INFO L226 Difference]: Without dead ends: 382 [2023-12-02 15:23:56,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:23:56,153 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 330 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:23:56,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 568 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:23:56,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-12-02 15:23:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2023-12-02 15:23:56,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 283 states have (on average 1.6254416961130742) internal successors, (460), 355 states have internal predecessors, (460), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:23:56,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 504 transitions. [2023-12-02 15:23:56,171 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 504 transitions. Word has length 9 [2023-12-02 15:23:56,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:23:56,173 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 504 transitions. [2023-12-02 15:23:56,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:23:56,173 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 504 transitions. [2023-12-02 15:23:56,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 15:23:56,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:23:56,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:23:56,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 15:23:56,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-02 15:23:56,380 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:23:56,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:23:56,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1264903694, now seen corresponding path program 1 times [2023-12-02 15:23:56,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:23:56,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251451541] [2023-12-02 15:23:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:56,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:23:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:23:56,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:23:56,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251451541] [2023-12-02 15:23:56,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251451541] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:23:56,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138904850] [2023-12-02 15:23:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:23:56,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:23:56,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:23:56,531 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:23:56,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 15:23:56,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:23:56,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:23:56,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:23:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:23:56,790 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:23:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:23:56,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138904850] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:23:56,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1300646620] [2023-12-02 15:23:56,837 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 15:23:56,837 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:23:56,841 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:23:56,846 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:23:56,846 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:24:02,731 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:24:02,772 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:24:04,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1300646620] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:04,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:24:04,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-12-02 15:24:04,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073603037] [2023-12-02 15:24:04,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:04,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 15:24:04,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:04,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 15:24:04,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:24:04,059 INFO L87 Difference]: Start difference. First operand 382 states and 504 transitions. Second operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:06,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:06,192 INFO L93 Difference]: Finished difference Result 384 states and 505 transitions. [2023-12-02 15:24:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:24:06,192 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-02 15:24:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:06,195 INFO L225 Difference]: With dead ends: 384 [2023-12-02 15:24:06,195 INFO L226 Difference]: Without dead ends: 382 [2023-12-02 15:24:06,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 15:24:06,197 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 6 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:06,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1849 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 15:24:06,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-12-02 15:24:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2023-12-02 15:24:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 284 states have (on average 1.6161971830985915) internal successors, (459), 354 states have internal predecessors, (459), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 503 transitions. [2023-12-02 15:24:06,217 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 503 transitions. Word has length 10 [2023-12-02 15:24:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:06,217 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 503 transitions. [2023-12-02 15:24:06,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 503 transitions. [2023-12-02 15:24:06,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 15:24:06,218 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:06,219 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:06,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 15:24:06,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:06,424 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:06,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:06,424 INFO L85 PathProgramCache]: Analyzing trace with hash -631064214, now seen corresponding path program 1 times [2023-12-02 15:24:06,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:06,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076240344] [2023-12-02 15:24:06,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:06,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:06,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:24:06,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:06,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076240344] [2023-12-02 15:24:06,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076240344] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:06,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124073305] [2023-12-02 15:24:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:06,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:06,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:06,565 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:06,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 15:24:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:06,840 INFO L262 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:24:06,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:24:06,851 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:24:06,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124073305] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:06,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:24:06,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:24:06,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98985318] [2023-12-02 15:24:06,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:06,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:24:06,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:06,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:24:06,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:06,853 INFO L87 Difference]: Start difference. First operand 382 states and 503 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:07,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:07,083 INFO L93 Difference]: Finished difference Result 382 states and 503 transitions. [2023-12-02 15:24:07,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:24:07,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-02 15:24:07,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:07,086 INFO L225 Difference]: With dead ends: 382 [2023-12-02 15:24:07,087 INFO L226 Difference]: Without dead ends: 381 [2023-12-02 15:24:07,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:07,088 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 2 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:07,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 853 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:24:07,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-02 15:24:07,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2023-12-02 15:24:07,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 284 states have (on average 1.6126760563380282) internal successors, (458), 353 states have internal predecessors, (458), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:07,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 502 transitions. [2023-12-02 15:24:07,107 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 502 transitions. Word has length 15 [2023-12-02 15:24:07,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:07,108 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 502 transitions. [2023-12-02 15:24:07,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:07,108 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 502 transitions. [2023-12-02 15:24:07,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 15:24:07,109 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:07,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:07,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 15:24:07,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 15:24:07,311 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:07,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:07,312 INFO L85 PathProgramCache]: Analyzing trace with hash -631020619, now seen corresponding path program 1 times [2023-12-02 15:24:07,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:07,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403899979] [2023-12-02 15:24:07,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:07,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:24:07,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:07,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403899979] [2023-12-02 15:24:07,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403899979] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:07,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562994715] [2023-12-02 15:24:07,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:07,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:07,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:07,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:07,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 15:24:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:07,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:24:07,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:07,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:24:07,715 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:24:07,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562994715] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:07,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:24:07,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:24:07,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068248168] [2023-12-02 15:24:07,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:07,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:24:07,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:07,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:24:07,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:07,717 INFO L87 Difference]: Start difference. First operand 381 states and 502 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:07,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:07,936 INFO L93 Difference]: Finished difference Result 381 states and 502 transitions. [2023-12-02 15:24:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:24:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-02 15:24:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:07,939 INFO L225 Difference]: With dead ends: 381 [2023-12-02 15:24:07,939 INFO L226 Difference]: Without dead ends: 380 [2023-12-02 15:24:07,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:07,940 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 6 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:07,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 846 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:24:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-02 15:24:07,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2023-12-02 15:24:07,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 284 states have (on average 1.6091549295774648) internal successors, (457), 352 states have internal predecessors, (457), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:07,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 501 transitions. [2023-12-02 15:24:07,959 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 501 transitions. Word has length 15 [2023-12-02 15:24:07,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:07,960 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 501 transitions. [2023-12-02 15:24:07,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:07,960 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 501 transitions. [2023-12-02 15:24:07,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:24:07,960 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:07,961 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:07,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 15:24:08,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 15:24:08,161 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:08,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:08,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1954052201, now seen corresponding path program 1 times [2023-12-02 15:24:08,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:08,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210579532] [2023-12-02 15:24:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:08,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:24:08,261 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:08,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210579532] [2023-12-02 15:24:08,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210579532] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:08,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765923579] [2023-12-02 15:24:08,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:08,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:08,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:08,262 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:08,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 15:24:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:08,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:24:08,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:08,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:24:08,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:24:08,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765923579] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:08,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:24:08,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:24:08,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603497199] [2023-12-02 15:24:08,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:08,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:24:08,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:08,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:24:08,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:08,566 INFO L87 Difference]: Start difference. First operand 380 states and 501 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:08,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:08,777 INFO L93 Difference]: Finished difference Result 382 states and 503 transitions. [2023-12-02 15:24:08,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:24:08,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 15:24:08,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:08,780 INFO L225 Difference]: With dead ends: 382 [2023-12-02 15:24:08,780 INFO L226 Difference]: Without dead ends: 381 [2023-12-02 15:24:08,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:08,781 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 258 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:08,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 615 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:24:08,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-12-02 15:24:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 379. [2023-12-02 15:24:08,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 284 states have (on average 1.6056338028169015) internal successors, (456), 351 states have internal predecessors, (456), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:08,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 500 transitions. [2023-12-02 15:24:08,799 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 500 transitions. Word has length 16 [2023-12-02 15:24:08,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:08,800 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 500 transitions. [2023-12-02 15:24:08,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:08,800 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 500 transitions. [2023-12-02 15:24:08,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 15:24:08,801 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:08,801 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:08,808 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 15:24:09,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-02 15:24:09,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:09,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:09,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1911846234, now seen corresponding path program 1 times [2023-12-02 15:24:09,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:09,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571236574] [2023-12-02 15:24:09,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:09,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:24:09,123 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:09,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571236574] [2023-12-02 15:24:09,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571236574] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:09,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730187263] [2023-12-02 15:24:09,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:09,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:09,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:09,125 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:09,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 15:24:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:09,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:24:09,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:24:09,383 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:24:09,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730187263] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:09,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:24:09,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:24:09,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756614280] [2023-12-02 15:24:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:09,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:24:09,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:09,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:24:09,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:09,385 INFO L87 Difference]: Start difference. First operand 379 states and 500 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:09,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:09,610 INFO L93 Difference]: Finished difference Result 749 states and 992 transitions. [2023-12-02 15:24:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:24:09,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 15:24:09,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:09,614 INFO L225 Difference]: With dead ends: 749 [2023-12-02 15:24:09,614 INFO L226 Difference]: Without dead ends: 382 [2023-12-02 15:24:09,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:09,616 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 0 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:09,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 850 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:24:09,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2023-12-02 15:24:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2023-12-02 15:24:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 287 states have (on average 1.5993031358885017) internal successors, (459), 354 states have internal predecessors, (459), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:09,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 503 transitions. [2023-12-02 15:24:09,635 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 503 transitions. Word has length 16 [2023-12-02 15:24:09,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:09,635 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 503 transitions. [2023-12-02 15:24:09,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:09,635 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 503 transitions. [2023-12-02 15:24:09,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 15:24:09,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:09,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:09,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-02 15:24:09,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:09,838 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:09,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:09,839 INFO L85 PathProgramCache]: Analyzing trace with hash 446076502, now seen corresponding path program 1 times [2023-12-02 15:24:09,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:09,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161010556] [2023-12-02 15:24:09,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:09,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:09,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 15:24:09,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:09,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161010556] [2023-12-02 15:24:09,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161010556] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:09,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383228739] [2023-12-02 15:24:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:09,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:09,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:09,950 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:09,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 15:24:10,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:10,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:24:10,182 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:24:10,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:24:10,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383228739] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:10,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:24:10,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:24:10,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668292997] [2023-12-02 15:24:10,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:10,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:24:10,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:10,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:24:10,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:10,195 INFO L87 Difference]: Start difference. First operand 382 states and 503 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:10,464 INFO L93 Difference]: Finished difference Result 582 states and 783 transitions. [2023-12-02 15:24:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:24:10,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-12-02 15:24:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:10,468 INFO L225 Difference]: With dead ends: 582 [2023-12-02 15:24:10,468 INFO L226 Difference]: Without dead ends: 581 [2023-12-02 15:24:10,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:10,469 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 256 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:10,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 839 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:24:10,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2023-12-02 15:24:10,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 386. [2023-12-02 15:24:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 291 states have (on average 1.5945017182130585) internal successors, (464), 358 states have internal predecessors, (464), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:10,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 508 transitions. [2023-12-02 15:24:10,485 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 508 transitions. Word has length 17 [2023-12-02 15:24:10,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:10,486 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 508 transitions. [2023-12-02 15:24:10,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:10,486 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 508 transitions. [2023-12-02 15:24:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 15:24:10,486 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:10,487 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:10,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 15:24:10,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 15:24:10,687 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:10,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:10,688 INFO L85 PathProgramCache]: Analyzing trace with hash 250225255, now seen corresponding path program 1 times [2023-12-02 15:24:10,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:10,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289635776] [2023-12-02 15:24:10,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:10,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:10,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 15:24:10,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:10,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289635776] [2023-12-02 15:24:10,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289635776] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:10,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325548000] [2023-12-02 15:24:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:10,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:10,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:10,806 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:10,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 15:24:11,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:11,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:24:11,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:24:11,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:24:11,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325548000] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:11,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:24:11,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:24:11,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117905177] [2023-12-02 15:24:11,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:11,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:24:11,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:11,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:24:11,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:11,072 INFO L87 Difference]: Start difference. First operand 386 states and 508 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:11,265 INFO L93 Difference]: Finished difference Result 386 states and 508 transitions. [2023-12-02 15:24:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:24:11,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-12-02 15:24:11,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:11,269 INFO L225 Difference]: With dead ends: 386 [2023-12-02 15:24:11,269 INFO L226 Difference]: Without dead ends: 385 [2023-12-02 15:24:11,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:11,270 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 0 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:11,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 849 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:24:11,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-02 15:24:11,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2023-12-02 15:24:11,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 289 states have (on average 1.5951557093425606) internal successors, (461), 355 states have internal predecessors, (461), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:11,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 505 transitions. [2023-12-02 15:24:11,288 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 505 transitions. Word has length 19 [2023-12-02 15:24:11,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:11,288 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 505 transitions. [2023-12-02 15:24:11,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:11,289 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 505 transitions. [2023-12-02 15:24:11,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 15:24:11,289 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:11,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:11,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 15:24:11,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 15:24:11,490 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:11,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:11,490 INFO L85 PathProgramCache]: Analyzing trace with hash 251576709, now seen corresponding path program 1 times [2023-12-02 15:24:11,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:11,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415294899] [2023-12-02 15:24:11,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:11,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 15:24:11,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415294899] [2023-12-02 15:24:11,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415294899] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263733427] [2023-12-02 15:24:11,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:11,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:11,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:11,586 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:11,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 15:24:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:11,872 INFO L262 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 15:24:11,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 15:24:11,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 15:24:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263733427] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:11,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 15:24:11,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 15:24:11,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055053100] [2023-12-02 15:24:11,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:11,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:24:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:11,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:24:11,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:11,887 INFO L87 Difference]: Start difference. First operand 383 states and 505 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:12,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:12,102 INFO L93 Difference]: Finished difference Result 391 states and 515 transitions. [2023-12-02 15:24:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:24:12,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-12-02 15:24:12,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:12,105 INFO L225 Difference]: With dead ends: 391 [2023-12-02 15:24:12,105 INFO L226 Difference]: Without dead ends: 390 [2023-12-02 15:24:12,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:24:12,106 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 0 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:12,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 846 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 15:24:12,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-02 15:24:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2023-12-02 15:24:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 296 states have (on average 1.587837837837838) internal successors, (470), 362 states have internal predecessors, (470), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 514 transitions. [2023-12-02 15:24:12,126 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 514 transitions. Word has length 19 [2023-12-02 15:24:12,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:12,126 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 514 transitions. [2023-12-02 15:24:12,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:12,127 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 514 transitions. [2023-12-02 15:24:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 15:24:12,127 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:12,127 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:12,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 15:24:12,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 15:24:12,328 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:12,328 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:12,328 INFO L85 PathProgramCache]: Analyzing trace with hash 651545693, now seen corresponding path program 1 times [2023-12-02 15:24:12,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:12,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442906390] [2023-12-02 15:24:12,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:12,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:12,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 15:24:12,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:12,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442906390] [2023-12-02 15:24:12,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442906390] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:12,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367284007] [2023-12-02 15:24:12,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:12,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:12,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:12,425 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:12,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 15:24:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:12,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:24:12,712 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:12,722 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 15:24:12,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:24:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 15:24:12,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367284007] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:24:12,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1575530607] [2023-12-02 15:24:12,744 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-12-02 15:24:12,744 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:24:12,745 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:24:12,745 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:24:12,745 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:24:17,060 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 57 for LOIs [2023-12-02 15:24:17,067 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:24:19,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1575530607] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:24:19,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:24:19,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 3, 4] total 15 [2023-12-02 15:24:19,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894936825] [2023-12-02 15:24:19,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:24:19,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 15:24:19,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:19,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 15:24:19,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-02 15:24:19,035 INFO L87 Difference]: Start difference. First operand 390 states and 514 transitions. Second operand has 10 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:21,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:24:24,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:24,354 INFO L93 Difference]: Finished difference Result 753 states and 996 transitions. [2023-12-02 15:24:24,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 15:24:24,355 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-12-02 15:24:24,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:24,356 INFO L225 Difference]: With dead ends: 753 [2023-12-02 15:24:24,356 INFO L226 Difference]: Without dead ends: 390 [2023-12-02 15:24:24,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-12-02 15:24:24,358 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 2 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:24,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2132 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 844 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-02 15:24:24,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-02 15:24:24,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2023-12-02 15:24:24,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 296 states have (on average 1.5844594594594594) internal successors, (469), 362 states have internal predecessors, (469), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:24,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 513 transitions. [2023-12-02 15:24:24,376 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 513 transitions. Word has length 21 [2023-12-02 15:24:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:24,376 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 513 transitions. [2023-12-02 15:24:24,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:24,376 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 513 transitions. [2023-12-02 15:24:24,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 15:24:24,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:24,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:24,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 15:24:24,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:24,579 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:24,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1829925232, now seen corresponding path program 1 times [2023-12-02 15:24:24,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:24,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771120075] [2023-12-02 15:24:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:24,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:24:24,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:24,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771120075] [2023-12-02 15:24:24,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771120075] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:24,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138570466] [2023-12-02 15:24:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:24,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:24,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:24,677 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:24,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 15:24:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:24,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:24:24,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:24,962 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:24:24,963 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:24:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 15:24:24,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138570466] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:24:24,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [883307578] [2023-12-02 15:24:24,984 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 15:24:24,984 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:24:24,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:24:24,984 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:24:24,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:24:34,517 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:24:34,557 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:24:39,817 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14419#(<= 2147483647 |ULTIMATE.start_main_~i~6#1|)' at error location [2023-12-02 15:24:39,817 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:24:39,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:24:39,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-12-02 15:24:39,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341770036] [2023-12-02 15:24:39,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:24:39,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 15:24:39,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:39,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 15:24:39,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=321, Unknown=1, NotChecked=0, Total=380 [2023-12-02 15:24:39,819 INFO L87 Difference]: Start difference. First operand 390 states and 513 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:24:40,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:40,175 INFO L93 Difference]: Finished difference Result 784 states and 1032 transitions. [2023-12-02 15:24:40,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 15:24:40,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-12-02 15:24:40,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:40,178 INFO L225 Difference]: With dead ends: 784 [2023-12-02 15:24:40,178 INFO L226 Difference]: Without dead ends: 399 [2023-12-02 15:24:40,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=58, Invalid=321, Unknown=1, NotChecked=0, Total=380 [2023-12-02 15:24:40,180 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 4 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:40,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1700 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:24:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-12-02 15:24:40,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 399. [2023-12-02 15:24:40,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 305 states have (on average 1.5672131147540984) internal successors, (478), 371 states have internal predecessors, (478), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:40,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 522 transitions. [2023-12-02 15:24:40,201 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 522 transitions. Word has length 26 [2023-12-02 15:24:40,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:40,202 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 522 transitions. [2023-12-02 15:24:40,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:24:40,202 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 522 transitions. [2023-12-02 15:24:40,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 15:24:40,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:40,203 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:40,209 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 15:24:40,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:40,404 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:40,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:40,404 INFO L85 PathProgramCache]: Analyzing trace with hash -34088237, now seen corresponding path program 2 times [2023-12-02 15:24:40,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:40,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516168289] [2023-12-02 15:24:40,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:40,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:40,523 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 15:24:40,523 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:40,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516168289] [2023-12-02 15:24:40,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516168289] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:40,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830112536] [2023-12-02 15:24:40,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:24:40,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:40,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:40,524 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:40,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 15:24:40,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 15:24:40,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:24:40,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 15:24:40,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:40,862 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 15:24:40,862 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:24:40,912 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 15:24:40,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830112536] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:24:40,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [763221881] [2023-12-02 15:24:40,914 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 15:24:40,915 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:24:40,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:24:40,915 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:24:40,915 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:24:50,419 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:24:50,443 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:24:55,803 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16041#(<= 2147483647 |ULTIMATE.start_main_~i~6#1|)' at error location [2023-12-02 15:24:55,803 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:24:55,804 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:24:55,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-12-02 15:24:55,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322606195] [2023-12-02 15:24:55,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:24:55,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 15:24:55,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:24:55,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 15:24:55,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=359, Unknown=2, NotChecked=0, Total=420 [2023-12-02 15:24:55,805 INFO L87 Difference]: Start difference. First operand 399 states and 522 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:56,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:24:56,354 INFO L93 Difference]: Finished difference Result 781 states and 1028 transitions. [2023-12-02 15:24:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:24:56,355 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-12-02 15:24:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:24:56,356 INFO L225 Difference]: With dead ends: 781 [2023-12-02 15:24:56,357 INFO L226 Difference]: Without dead ends: 408 [2023-12-02 15:24:56,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=93, Invalid=503, Unknown=4, NotChecked=0, Total=600 [2023-12-02 15:24:56,358 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 315 mSDsluCounter, 1532 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:24:56,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 1948 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:24:56,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-12-02 15:24:56,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 395. [2023-12-02 15:24:56,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 302 states have (on average 1.5662251655629138) internal successors, (473), 367 states have internal predecessors, (473), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:24:56,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 517 transitions. [2023-12-02 15:24:56,373 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 517 transitions. Word has length 35 [2023-12-02 15:24:56,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:24:56,373 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 517 transitions. [2023-12-02 15:24:56,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:24:56,374 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 517 transitions. [2023-12-02 15:24:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 15:24:56,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:24:56,374 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:24:56,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 15:24:56,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:56,575 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:24:56,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:24:56,576 INFO L85 PathProgramCache]: Analyzing trace with hash -174003758, now seen corresponding path program 1 times [2023-12-02 15:24:56,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:24:56,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505519405] [2023-12-02 15:24:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:56,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:24:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 15:24:56,740 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:24:56,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505519405] [2023-12-02 15:24:56,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505519405] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:24:56,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79579518] [2023-12-02 15:24:56,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:24:56,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:24:56,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:24:56,742 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:24:56,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 15:24:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:24:57,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 15:24:57,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:24:57,194 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:24:57,194 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:24:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 15:24:57,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79579518] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:24:57,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1920473572] [2023-12-02 15:24:57,285 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-12-02 15:24:57,285 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:24:57,286 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:24:57,286 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:24:57,286 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:25:07,985 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:25:08,009 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:25:13,981 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17697#(and (= |ULTIMATE.start_getopt32_~applet_opts#1.base| 8) (= 0 (+ |ULTIMATE.start_getopt32_~max_arg~0#1| 1)) (= |ULTIMATE.start___main_#t~varargs186#1.offset| 0) (= 7 ~opt_complementary~0.base) (= |ULTIMATE.start_getopt32_~spec_flgs~0#1| 0) (= |ULTIMATE.start_getopt32_~flags~0#1| 0) (= ~opt_complementary~0.offset 0) (<= 2147483647 |ULTIMATE.start_getopt32_~argc~0#1|) (= |ULTIMATE.start_getopt32_#varArgs#1.offset| 0) (= |ULTIMATE.start_getopt32_~min_arg~0#1| 0) (= |ULTIMATE.start_getopt32_~applet_opts#1.offset| 0) (= 0 |ULTIMATE.start_getopt32_#in~applet_opts#1.offset|) (= |ULTIMATE.start_getopt32_~#complementary~0#1.offset| 0) (= |ULTIMATE.start_getopt32_#in~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~requires~0#1| 0) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_getopt32_~argv#1.base|) (+ |ULTIMATE.start_getopt32_~argv#1.offset| (* 8 |ULTIMATE.start_getopt32_~argc~0#1|))) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_getopt32_~argv#1.base|) (+ |ULTIMATE.start_getopt32_~argv#1.offset| (* 8 |ULTIMATE.start_getopt32_~argc~0#1|))) 0))))' at error location [2023-12-02 15:25:13,981 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:25:13,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:25:13,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-12-02 15:25:13,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051296761] [2023-12-02 15:25:13,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:25:13,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 15:25:13,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:13,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 15:25:13,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2023-12-02 15:25:13,983 INFO L87 Difference]: Start difference. First operand 395 states and 517 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:25:14,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:14,798 INFO L93 Difference]: Finished difference Result 1188 states and 1597 transitions. [2023-12-02 15:25:14,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 15:25:14,798 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2023-12-02 15:25:14,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:14,802 INFO L225 Difference]: With dead ends: 1188 [2023-12-02 15:25:14,802 INFO L226 Difference]: Without dead ends: 807 [2023-12-02 15:25:14,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2023-12-02 15:25:14,804 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 772 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:14,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 3130 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 15:25:14,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2023-12-02 15:25:14,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 417. [2023-12-02 15:25:14,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 324 states have (on average 1.5308641975308641) internal successors, (496), 389 states have internal predecessors, (496), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 15:25:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 540 transitions. [2023-12-02 15:25:14,828 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 540 transitions. Word has length 40 [2023-12-02 15:25:14,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:14,829 INFO L495 AbstractCegarLoop]: Abstraction has 417 states and 540 transitions. [2023-12-02 15:25:14,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:25:14,829 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 540 transitions. [2023-12-02 15:25:14,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 15:25:14,830 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:14,831 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-02 15:25:14,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-12-02 15:25:15,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 15:25:15,031 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:25:15,031 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash -346558837, now seen corresponding path program 1 times [2023-12-02 15:25:15,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:15,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604998341] [2023-12-02 15:25:15,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:15,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:15,291 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 15:25:15,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:15,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604998341] [2023-12-02 15:25:15,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604998341] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:15,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:15,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:25:15,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770351616] [2023-12-02 15:25:15,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:15,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:25:15,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:15,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:25:15,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:15,293 INFO L87 Difference]: Start difference. First operand 417 states and 540 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:25:15,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:15,656 INFO L93 Difference]: Finished difference Result 833 states and 1099 transitions. [2023-12-02 15:25:15,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:25:15,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2023-12-02 15:25:15,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:15,663 INFO L225 Difference]: With dead ends: 833 [2023-12-02 15:25:15,663 INFO L226 Difference]: Without dead ends: 497 [2023-12-02 15:25:15,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:15,665 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 91 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 799 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:15,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 799 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:25:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2023-12-02 15:25:15,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 454. [2023-12-02 15:25:15,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 360 states have (on average 1.5166666666666666) internal successors, (546), 425 states have internal predecessors, (546), 26 states have call successors, (26), 8 states have call predecessors, (26), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:25:15,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 592 transitions. [2023-12-02 15:25:15,697 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 592 transitions. Word has length 62 [2023-12-02 15:25:15,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:15,697 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 592 transitions. [2023-12-02 15:25:15,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:25:15,698 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 592 transitions. [2023-12-02 15:25:15,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 15:25:15,699 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:15,699 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-02 15:25:15,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 15:25:15,699 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:25:15,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:15,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2141622052, now seen corresponding path program 1 times [2023-12-02 15:25:15,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:15,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808694971] [2023-12-02 15:25:15,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:15,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:15,933 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 15:25:15,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:15,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808694971] [2023-12-02 15:25:15,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808694971] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:15,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:15,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:25:15,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980859282] [2023-12-02 15:25:15,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:15,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:25:15,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:15,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:25:15,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:25:15,935 INFO L87 Difference]: Start difference. First operand 454 states and 592 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:25:16,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:16,338 INFO L93 Difference]: Finished difference Result 496 states and 646 transitions. [2023-12-02 15:25:16,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 15:25:16,339 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2023-12-02 15:25:16,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:16,341 INFO L225 Difference]: With dead ends: 496 [2023-12-02 15:25:16,341 INFO L226 Difference]: Without dead ends: 495 [2023-12-02 15:25:16,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:25:16,342 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 94 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:16,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 1256 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:25:16,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-02 15:25:16,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 453. [2023-12-02 15:25:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 360 states have (on average 1.511111111111111) internal successors, (544), 424 states have internal predecessors, (544), 26 states have call successors, (26), 8 states have call predecessors, (26), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:25:16,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 590 transitions. [2023-12-02 15:25:16,361 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 590 transitions. Word has length 63 [2023-12-02 15:25:16,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:16,361 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 590 transitions. [2023-12-02 15:25:16,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:25:16,362 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 590 transitions. [2023-12-02 15:25:16,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 15:25:16,362 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:16,363 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:25:16,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 15:25:16,363 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:25:16,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:16,363 INFO L85 PathProgramCache]: Analyzing trace with hash -32242375, now seen corresponding path program 2 times [2023-12-02 15:25:16,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:16,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720134440] [2023-12-02 15:25:16,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:16,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 15:25:16,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:16,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720134440] [2023-12-02 15:25:16,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720134440] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:25:16,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466626203] [2023-12-02 15:25:16,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:25:16,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:16,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:16,598 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:16,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 15:25:17,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 15:25:17,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:25:17,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:25:17,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 15:25:17,308 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:25:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 15:25:17,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466626203] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:25:17,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [223987027] [2023-12-02 15:25:17,348 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-12-02 15:25:17,348 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:25:17,348 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:25:17,348 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:25:17,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:25:27,901 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:25:27,926 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:25:34,384 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22626#(and (= |ULTIMATE.start_getopt32_~applet_opts#1.base| 8) (= 0 (+ |ULTIMATE.start_getopt32_~max_arg~0#1| 1)) (= |ULTIMATE.start___main_#t~varargs186#1.offset| 0) (= 7 ~opt_complementary~0.base) (= |ULTIMATE.start_getopt32_~spec_flgs~0#1| 0) (= |ULTIMATE.start_getopt32_~flags~0#1| 0) (= ~opt_complementary~0.offset 0) (<= 2147483647 |ULTIMATE.start_getopt32_~argc~0#1|) (= |ULTIMATE.start_getopt32_#varArgs#1.offset| 0) (= |ULTIMATE.start_getopt32_~min_arg~0#1| 0) (= |ULTIMATE.start_getopt32_~applet_opts#1.offset| 0) (= 0 |ULTIMATE.start_getopt32_#in~applet_opts#1.offset|) (= |ULTIMATE.start_getopt32_~#complementary~0#1.offset| 0) (= |ULTIMATE.start_getopt32_#in~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~requires~0#1| 0) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_getopt32_~argv#1.base|) (+ |ULTIMATE.start_getopt32_~argv#1.offset| (* 8 |ULTIMATE.start_getopt32_~argc~0#1|))) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_getopt32_~argv#1.base|) (+ |ULTIMATE.start_getopt32_~argv#1.offset| (* 8 |ULTIMATE.start_getopt32_~argc~0#1|))) 0))))' at error location [2023-12-02 15:25:34,384 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:25:34,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:25:34,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-12-02 15:25:34,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901872999] [2023-12-02 15:25:34,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:25:34,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 15:25:34,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:34,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 15:25:34,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2023-12-02 15:25:34,386 INFO L87 Difference]: Start difference. First operand 453 states and 590 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:25:35,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:35,305 INFO L93 Difference]: Finished difference Result 1856 states and 2558 transitions. [2023-12-02 15:25:35,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 15:25:35,306 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-12-02 15:25:35,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:35,314 INFO L225 Difference]: With dead ends: 1856 [2023-12-02 15:25:35,314 INFO L226 Difference]: Without dead ends: 1855 [2023-12-02 15:25:35,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2023-12-02 15:25:35,315 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 2533 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2575 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:35,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2575 Valid, 2335 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:25:35,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1855 states. [2023-12-02 15:25:35,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1855 to 469. [2023-12-02 15:25:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 376 states have (on average 1.5) internal successors, (564), 440 states have internal predecessors, (564), 26 states have call successors, (26), 8 states have call predecessors, (26), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:25:35,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 610 transitions. [2023-12-02 15:25:35,348 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 610 transitions. Word has length 62 [2023-12-02 15:25:35,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:35,349 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 610 transitions. [2023-12-02 15:25:35,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:25:35,349 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 610 transitions. [2023-12-02 15:25:35,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 15:25:35,350 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:35,350 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-02 15:25:35,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 15:25:35,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:35,550 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:25:35,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:35,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1965774637, now seen corresponding path program 1 times [2023-12-02 15:25:35,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:35,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747639674] [2023-12-02 15:25:35,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:35,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:35,748 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 15:25:35,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747639674] [2023-12-02 15:25:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747639674] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:35,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 15:25:35,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066104303] [2023-12-02 15:25:35,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:35,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 15:25:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 15:25:35,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 15:25:35,750 INFO L87 Difference]: Start difference. First operand 469 states and 610 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:25:36,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:36,208 INFO L93 Difference]: Finished difference Result 511 states and 664 transitions. [2023-12-02 15:25:36,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 15:25:36,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2023-12-02 15:25:36,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:36,211 INFO L225 Difference]: With dead ends: 511 [2023-12-02 15:25:36,211 INFO L226 Difference]: Without dead ends: 510 [2023-12-02 15:25:36,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 15:25:36,212 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 89 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:36,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1260 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 15:25:36,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-12-02 15:25:36,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 469. [2023-12-02 15:25:36,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 376 states have (on average 1.497340425531915) internal successors, (563), 440 states have internal predecessors, (563), 26 states have call successors, (26), 8 states have call predecessors, (26), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:25:36,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 609 transitions. [2023-12-02 15:25:36,235 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 609 transitions. Word has length 64 [2023-12-02 15:25:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:36,235 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 609 transitions. [2023-12-02 15:25:36,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:25:36,236 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 609 transitions. [2023-12-02 15:25:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 15:25:36,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:36,236 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-02 15:25:36,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 15:25:36,237 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:25:36,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1903159324, now seen corresponding path program 1 times [2023-12-02 15:25:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414849555] [2023-12-02 15:25:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:36,355 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 15:25:36,355 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:36,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414849555] [2023-12-02 15:25:36,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414849555] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:25:36,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:25:36,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:25:36,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447962647] [2023-12-02 15:25:36,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:25:36,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:25:36,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:25:36,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:25:36,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:36,357 INFO L87 Difference]: Start difference. First operand 469 states and 609 transitions. Second operand has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:25:36,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:25:36,728 INFO L93 Difference]: Finished difference Result 822 states and 1091 transitions. [2023-12-02 15:25:36,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:25:36,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-12-02 15:25:36,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:25:36,731 INFO L225 Difference]: With dead ends: 822 [2023-12-02 15:25:36,731 INFO L226 Difference]: Without dead ends: 520 [2023-12-02 15:25:36,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:25:36,732 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 76 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:25:36,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 847 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:25:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-12-02 15:25:36,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 471. [2023-12-02 15:25:36,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 380 states have (on average 1.4894736842105263) internal successors, (566), 442 states have internal predecessors, (566), 26 states have call successors, (26), 8 states have call predecessors, (26), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 15:25:36,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 612 transitions. [2023-12-02 15:25:36,755 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 612 transitions. Word has length 70 [2023-12-02 15:25:36,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:25:36,755 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 612 transitions. [2023-12-02 15:25:36,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:25:36,756 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 612 transitions. [2023-12-02 15:25:36,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 15:25:36,756 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:25:36,756 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-02 15:25:36,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 15:25:36,757 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:25:36,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:25:36,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1902526833, now seen corresponding path program 1 times [2023-12-02 15:25:36,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:25:36,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538545180] [2023-12-02 15:25:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:36,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:25:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 15:25:36,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:25:36,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538545180] [2023-12-02 15:25:36,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538545180] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:25:36,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670735906] [2023-12-02 15:25:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:25:36,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:25:36,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:25:36,937 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:25:36,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 15:25:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:25:37,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:25:37,360 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:25:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 15:25:37,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:25:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 15:25:37,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670735906] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:25:37,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2075732883] [2023-12-02 15:25:37,410 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-12-02 15:25:37,410 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:25:37,411 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:25:37,411 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:25:37,411 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:25:53,386 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:25:53,410 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 222 for LOIs [2023-12-02 15:25:53,559 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:02,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2075732883] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:26:02,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:26:02,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [5, 5, 5] total 28 [2023-12-02 15:26:02,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588524211] [2023-12-02 15:26:02,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:26:02,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-12-02 15:26:02,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-12-02 15:26:02,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=659, Unknown=5, NotChecked=0, Total=756 [2023-12-02 15:26:02,290 INFO L87 Difference]: Start difference. First operand 471 states and 612 transitions. Second operand has 21 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:26:11,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:26:11,552 INFO L93 Difference]: Finished difference Result 865 states and 1139 transitions. [2023-12-02 15:26:11,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-02 15:26:11,553 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 70 [2023-12-02 15:26:11,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:26:11,557 INFO L225 Difference]: With dead ends: 865 [2023-12-02 15:26:11,558 INFO L226 Difference]: Without dead ends: 475 [2023-12-02 15:26:11,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=98, Invalid=709, Unknown=5, NotChecked=0, Total=812 [2023-12-02 15:26:11,560 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 8 mSDsluCounter, 4329 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4734 SdHoareTripleChecker+Invalid, 2153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:26:11,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 4734 Invalid, 2153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2144 Invalid, 5 Unknown, 0 Unchecked, 8.9s Time] [2023-12-02 15:26:11,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-12-02 15:26:11,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2023-12-02 15:26:11,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 383 states have (on average 1.485639686684073) internal successors, (569), 445 states have internal predecessors, (569), 27 states have call successors, (27), 9 states have call predecessors, (27), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 15:26:11,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 617 transitions. [2023-12-02 15:26:11,587 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 617 transitions. Word has length 70 [2023-12-02 15:26:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:26:11,588 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 617 transitions. [2023-12-02 15:26:11,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.0) internal successors, (36), 19 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:26:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 617 transitions. [2023-12-02 15:26:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 15:26:11,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:26:11,589 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-02 15:26:11,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 15:26:11,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-12-02 15:26:11,790 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:26:11,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:26:11,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1669168459, now seen corresponding path program 1 times [2023-12-02 15:26:11,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:26:11,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534525087] [2023-12-02 15:26:11,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:11,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:26:11,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:11,960 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-02 15:26:11,960 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:26:11,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534525087] [2023-12-02 15:26:11,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534525087] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:26:11,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064568924] [2023-12-02 15:26:11,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:26:11,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:26:11,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:26:11,962 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:26:11,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 15:26:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:26:12,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:26:12,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:26:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-02 15:26:12,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:26:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-02 15:26:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064568924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:26:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1293072967] [2023-12-02 15:26:12,487 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-12-02 15:26:12,487 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:26:12,487 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:26:12,487 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:26:12,487 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:26:31,161 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:26:31,185 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 222 for LOIs [2023-12-02 15:26:32,680 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:26:57,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1293072967] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:26:57,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:26:57,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [5, 5, 5] total 40 [2023-12-02 15:26:57,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800079326] [2023-12-02 15:26:57,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:26:57,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 15:26:57,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:26:57,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 15:26:57,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1433, Unknown=10, NotChecked=0, Total=1560 [2023-12-02 15:26:57,624 INFO L87 Difference]: Start difference. First operand 475 states and 617 transitions. Second operand has 33 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 30 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:27:03,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:27:05,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 15:27:24,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:24,255 INFO L93 Difference]: Finished difference Result 496 states and 646 transitions. [2023-12-02 15:27:24,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-12-02 15:27:24,255 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 30 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2023-12-02 15:27:24,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:24,258 INFO L225 Difference]: With dead ends: 496 [2023-12-02 15:27:24,258 INFO L226 Difference]: Without dead ends: 494 [2023-12-02 15:27:24,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=132, Invalid=1663, Unknown=11, NotChecked=0, Total=1806 [2023-12-02 15:27:24,259 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 21 mSDsluCounter, 7475 mSDsCounter, 0 mSdLazyCounter, 4930 mSolverCounterSat, 5 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7858 SdHoareTripleChecker+Invalid, 4955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4930 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:24,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 7858 Invalid, 4955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 4930 Invalid, 20 Unknown, 0 Unchecked, 24.0s Time] [2023-12-02 15:27:24,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2023-12-02 15:27:24,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 489. [2023-12-02 15:27:24,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 397 states have (on average 1.486146095717884) internal successors, (590), 458 states have internal predecessors, (590), 27 states have call successors, (27), 9 states have call predecessors, (27), 7 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 15:27:24,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 638 transitions. [2023-12-02 15:27:24,301 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 638 transitions. Word has length 71 [2023-12-02 15:27:24,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:24,301 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 638 transitions. [2023-12-02 15:27:24,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 30 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:27:24,301 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 638 transitions. [2023-12-02 15:27:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 15:27:24,302 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:24,302 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-02 15:27:24,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 15:27:24,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-12-02 15:27:24,503 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:27:24,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:24,503 INFO L85 PathProgramCache]: Analyzing trace with hash 185008106, now seen corresponding path program 1 times [2023-12-02 15:27:24,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:24,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301487793] [2023-12-02 15:27:24,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:24,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:24,656 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-02 15:27:24,657 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:24,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301487793] [2023-12-02 15:27:24,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301487793] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:27:24,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 15:27:24,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 15:27:24,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914393256] [2023-12-02 15:27:24,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:27:24,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 15:27:24,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:27:24,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 15:27:24,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:27:24,658 INFO L87 Difference]: Start difference. First operand 489 states and 638 transitions. Second operand has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:27:25,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:25,038 INFO L93 Difference]: Finished difference Result 847 states and 1125 transitions. [2023-12-02 15:27:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 15:27:25,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 72 [2023-12-02 15:27:25,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:25,041 INFO L225 Difference]: With dead ends: 847 [2023-12-02 15:27:25,041 INFO L226 Difference]: Without dead ends: 541 [2023-12-02 15:27:25,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 15:27:25,043 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 151 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:25,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 773 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 15:27:25,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2023-12-02 15:27:25,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 484. [2023-12-02 15:27:25,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 396 states have (on average 1.4772727272727273) internal successors, (585), 453 states have internal predecessors, (585), 27 states have call successors, (27), 9 states have call predecessors, (27), 7 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 15:27:25,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 633 transitions. [2023-12-02 15:27:25,089 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 633 transitions. Word has length 72 [2023-12-02 15:27:25,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:25,090 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 633 transitions. [2023-12-02 15:27:25,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 19.0) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 15:27:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 633 transitions. [2023-12-02 15:27:25,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 15:27:25,091 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:25,091 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-02 15:27:25,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-02 15:27:25,092 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:27:25,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:25,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1109038292, now seen corresponding path program 1 times [2023-12-02 15:27:25,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:25,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681117046] [2023-12-02 15:27:25,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:25,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-02 15:27:25,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:25,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681117046] [2023-12-02 15:27:25,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681117046] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:27:25,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826572900] [2023-12-02 15:27:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:25,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:27:25,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:27:25,329 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:27:25,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 15:27:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:25,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 15:27:25,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:27:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-02 15:27:25,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:27:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2023-12-02 15:27:25,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826572900] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:27:25,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2111618574] [2023-12-02 15:27:25,883 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 15:27:25,883 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:27:25,884 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:27:25,884 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:27:25,884 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:27:44,563 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:27:44,587 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 117 for LOIs [2023-12-02 15:27:44,944 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:27:55,989 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '33759#(and (= |~#bb_msg_standard_output~0.base| 17) (= ~option_mask32~0 0) (= ~xfunc_error_retval~0 1) (<= 1 |#StackHeapBarrier|) (= |~#bb_errno_location~0.offset| 0) (= |ULTIMATE.start_getopt32_~applet_opts#1.base| 8) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~optind~0 1) (= |ULTIMATE.start___main_~argv#1.offset| 0) (= 18 |~#bb_null_long_options~0.base|) (= |ULTIMATE.start_getopt32_#in~argv#1.offset| 0) (= |ULTIMATE.start_getopt32_~argv#1.offset| 0) (= |~#bb_errno_location~0.base| 15) (= |ULTIMATE.start_getopt32_~p~3#1.offset| 0) (= 0 |ULTIMATE.start_getopt32_~long_options~0#1.offset|) (= 19 |~#die_jmp~0.base|) (= ~msg_eol~0.base 3) (<= 32 |ULTIMATE.start_getopt32_~c~0#1|) (= 0 (+ |ULTIMATE.start_getopt32_~max_arg~0#1| 1)) (<= |ULTIMATE.start_main_~argc~1#1| 10000) (= |ULTIMATE.start___main_#t~varargs186#1.offset| 0) (= ~bb_errno~0.base 15) (<= 1 |ULTIMATE.start_main_~argc~1#1|) (<= 0 |ULTIMATE.start_getopt32_~applet_opts#1.offset|) (<= 2 |ULTIMATE.start_getopt32_~#complementary~0#1.base|) (= 7 ~opt_complementary~0.base) (= |ULTIMATE.start_getopt32_~long_options~0#1.base| 18) (= |ULTIMATE.start_getopt32_~spec_flgs~0#1| 0) (<= 0 |ULTIMATE.start_getopt32_~s~0#1.offset|) (= |ULTIMATE.start___main_#in~argv#1.offset| 0) (<= 2 |ULTIMATE.start_getopt32_~on_off~0#1.base|) (= |ULTIMATE.start_getopt32_~flags~0#1| 0) (<= |ULTIMATE.start___main_~argc#1| 10000) (= |~#bb_null_long_options~0.offset| 0) (= ~opt_complementary~0.offset 0) (= |ULTIMATE.start_main_~mem_track~0#1.offset| 0) (= ~msg_eol~0.offset 0) (= |ULTIMATE.start_getopt32_#varArgs#1.offset| 0) (= |~#bb_msg_memory_exhausted~0.offset| 0) (= ~applet_name~0.offset 0) (= ~applet_long_options~0.base 0) (= |ULTIMATE.start_getopt32_~s~0#1.base| 8) (= ~logmode~0 1) (= |ULTIMATE.start_getopt32_~min_arg~0#1| 0) (<= 1 |ULTIMATE.start___main_#in~argc#1|) (= 20 |~#dummy_utmp~0.base|) (= |~#bb_msg_standard_output~0.offset| 0) (= 0 |ULTIMATE.start_getopt32_#in~applet_opts#1.offset|) (= ~bb_errno~0.offset 0) (= |~#dummy_utmp~0.offset| 0) (= |ULTIMATE.start_main_~argv~0#1.offset| 0) (<= |ULTIMATE.start___main_#in~argc#1| 10000) (<= 0 |ULTIMATE.start_getopt32_~on_off~0#1.offset|) (= |~#die_jmp~0.offset| 0) (= ~applet_long_options~0.offset 0) (<= |ULTIMATE.start_getopt32_~applet_opts#1.offset| 1) (= |ULTIMATE.start_getopt32_~#complementary~0#1.offset| 0) (= |ULTIMATE.start_getopt32_~argc~0#1| 1) (= |ULTIMATE.start_getopt32_#in~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~requires~0#1| 0) (= |~#bb_msg_memory_exhausted~0.base| 16) (= ~die_sleep~0 0) (<= 1 |ULTIMATE.start___main_~argc#1|))' at error location [2023-12-02 15:27:55,990 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:27:55,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:27:55,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2023-12-02 15:27:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895596988] [2023-12-02 15:27:55,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:27:55,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 15:27:55,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:27:55,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 15:27:55,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=1501, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 15:27:55,992 INFO L87 Difference]: Start difference. First operand 484 states and 633 transitions. Second operand has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 15:27:56,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:27:56,949 INFO L93 Difference]: Finished difference Result 1089 states and 1455 transitions. [2023-12-02 15:27:56,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:27:56,950 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 73 [2023-12-02 15:27:56,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:27:56,954 INFO L225 Difference]: With dead ends: 1089 [2023-12-02 15:27:56,954 INFO L226 Difference]: Without dead ends: 645 [2023-12-02 15:27:56,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=139, Invalid=1501, Unknown=0, NotChecked=0, Total=1640 [2023-12-02 15:27:56,956 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 286 mSDsluCounter, 3407 mSDsCounter, 0 mSdLazyCounter, 1027 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 15:27:56,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 3940 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1027 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 15:27:56,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2023-12-02 15:27:56,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 517. [2023-12-02 15:27:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 432 states have (on average 1.4467592592592593) internal successors, (625), 485 states have internal predecessors, (625), 28 states have call successors, (28), 9 states have call predecessors, (28), 7 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 15:27:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 675 transitions. [2023-12-02 15:27:56,988 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 675 transitions. Word has length 73 [2023-12-02 15:27:56,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:27:56,988 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 675 transitions. [2023-12-02 15:27:56,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.909090909090909) internal successors, (76), 11 states have internal predecessors, (76), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-12-02 15:27:56,989 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 675 transitions. [2023-12-02 15:27:56,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 15:27:56,989 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:27:56,990 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 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] [2023-12-02 15:27:56,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 15:27:57,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 15:27:57,190 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:27:57,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:27:57,191 INFO L85 PathProgramCache]: Analyzing trace with hash -707060010, now seen corresponding path program 1 times [2023-12-02 15:27:57,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:27:57,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753180397] [2023-12-02 15:27:57,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:57,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:27:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:57,520 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-02 15:27:57,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:27:57,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753180397] [2023-12-02 15:27:57,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753180397] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:27:57,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564659337] [2023-12-02 15:27:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:27:57,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:27:57,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:27:57,522 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:27:57,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 15:27:57,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:27:57,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:27:57,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:27:58,009 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-02 15:27:58,009 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:27:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-02 15:27:58,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564659337] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:27:58,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [983291505] [2023-12-02 15:27:58,084 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 15:27:58,084 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:27:58,084 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:27:58,084 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:27:58,084 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:28:13,340 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:28:13,363 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 39 for LOIs [2023-12-02 15:28:13,368 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:28:16,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [983291505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:28:16,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:28:16,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [9, 9, 9] total 33 [2023-12-02 15:28:16,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118804654] [2023-12-02 15:28:16,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:28:16,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-02 15:28:16,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:28:16,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-02 15:28:16,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=914, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 15:28:16,083 INFO L87 Difference]: Start difference. First operand 517 states and 675 transitions. Second operand has 22 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:28:21,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:28:21,223 INFO L93 Difference]: Finished difference Result 925 states and 1224 transitions. [2023-12-02 15:28:21,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-02 15:28:21,224 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 86 [2023-12-02 15:28:21,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:28:21,226 INFO L225 Difference]: With dead ends: 925 [2023-12-02 15:28:21,226 INFO L226 Difference]: Without dead ends: 519 [2023-12-02 15:28:21,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 230 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=148, Invalid=974, Unknown=0, NotChecked=0, Total=1122 [2023-12-02 15:28:21,227 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 8 mSDsluCounter, 3333 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3727 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:28:21,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3727 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1593 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2023-12-02 15:28:21,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-02 15:28:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 517. [2023-12-02 15:28:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 432 states have (on average 1.4467592592592593) internal successors, (625), 485 states have internal predecessors, (625), 28 states have call successors, (28), 9 states have call predecessors, (28), 7 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 15:28:21,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 675 transitions. [2023-12-02 15:28:21,260 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 675 transitions. Word has length 86 [2023-12-02 15:28:21,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:28:21,260 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 675 transitions. [2023-12-02 15:28:21,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.0526315789473686) internal successors, (39), 20 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:28:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 675 transitions. [2023-12-02 15:28:21,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 15:28:21,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:28:21,261 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 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] [2023-12-02 15:28:21,269 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 15:28:21,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 15:28:21,462 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:28:21,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:28:21,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1320112325, now seen corresponding path program 1 times [2023-12-02 15:28:21,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:28:21,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577116551] [2023-12-02 15:28:21,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:21,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:28:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:21,741 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-12-02 15:28:21,741 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:28:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577116551] [2023-12-02 15:28:21,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577116551] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:28:21,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326784291] [2023-12-02 15:28:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:28:21,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:28:21,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:28:21,743 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:28:21,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 15:28:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:28:22,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:28:22,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:28:22,169 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-12-02 15:28:22,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:28:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-12-02 15:28:22,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326784291] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:28:22,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2127332761] [2023-12-02 15:28:22,248 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2023-12-02 15:28:22,248 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:28:22,248 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:28:22,248 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:28:22,249 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:28:44,369 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:28:44,393 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 222 for LOIs [2023-12-02 15:28:45,448 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:29:05,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2127332761] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 15:29:05,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:29:05,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [9, 9, 9] total 44 [2023-12-02 15:29:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702349048] [2023-12-02 15:29:05,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 15:29:05,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-12-02 15:29:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:29:05,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-12-02 15:29:05,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1719, Unknown=9, NotChecked=0, Total=1892 [2023-12-02 15:29:05,124 INFO L87 Difference]: Start difference. First operand 517 states and 675 transitions. Second operand has 33 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:29:23,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:29:23,621 INFO L93 Difference]: Finished difference Result 599 states and 790 transitions. [2023-12-02 15:29:23,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-02 15:29:23,622 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 87 [2023-12-02 15:29:23,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:29:23,625 INFO L225 Difference]: With dead ends: 599 [2023-12-02 15:29:23,625 INFO L226 Difference]: Without dead ends: 597 [2023-12-02 15:29:23,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 224 SyntacticMatches, 6 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=194, Invalid=2247, Unknown=9, NotChecked=0, Total=2450 [2023-12-02 15:29:23,627 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 439 mSDsluCounter, 6190 mSDsCounter, 0 mSdLazyCounter, 4149 mSolverCounterSat, 10 mSolverCounterUnsat, 17 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 6545 SdHoareTripleChecker+Invalid, 4176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4149 IncrementalHoareTripleChecker+Invalid, 17 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.4s IncrementalHoareTripleChecker+Time [2023-12-02 15:29:23,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 6545 Invalid, 4176 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 4149 Invalid, 17 Unknown, 0 Unchecked, 17.4s Time] [2023-12-02 15:29:23,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2023-12-02 15:29:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 505. [2023-12-02 15:29:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 421 states have (on average 1.4394299287410925) internal successors, (606), 473 states have internal predecessors, (606), 28 states have call successors, (28), 10 states have call predecessors, (28), 8 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 15:29:23,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 656 transitions. [2023-12-02 15:29:23,684 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 656 transitions. Word has length 87 [2023-12-02 15:29:23,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:29:23,684 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 656 transitions. [2023-12-02 15:29:23,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 30 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:29:23,685 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 656 transitions. [2023-12-02 15:29:23,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 15:29:23,686 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:29:23,686 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 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] [2023-12-02 15:29:23,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-12-02 15:29:23,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:29:23,886 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:29:23,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:29:23,887 INFO L85 PathProgramCache]: Analyzing trace with hash 825695350, now seen corresponding path program 1 times [2023-12-02 15:29:23,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:29:23,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989308824] [2023-12-02 15:29:23,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:29:23,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:29:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:29:24,206 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-02 15:29:24,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:29:24,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989308824] [2023-12-02 15:29:24,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989308824] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:29:24,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567624119] [2023-12-02 15:29:24,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:29:24,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:29:24,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:29:24,208 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:29:24,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 15:29:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:29:24,690 INFO L262 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:29:24,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:29:24,719 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-02 15:29:24,719 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:29:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 1 proven. 51 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2023-12-02 15:29:24,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567624119] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:29:24,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1196739838] [2023-12-02 15:29:24,790 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 15:29:24,790 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:29:24,790 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:29:24,790 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:29:24,790 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:29:51,146 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:29:51,170 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 222 for LOIs [2023-12-02 15:29:52,139 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:30:02,596 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '40408#(and (= |ULTIMATE.start_getopt32_~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~p~3#1.offset| 0) (<= |ULTIMATE.start_getopt32_~c~0#1| 31) (<= 2147483648 |ULTIMATE.start_getopt32_#t~nondet79#1|) (= 0 (+ |ULTIMATE.start_getopt32_~max_arg~0#1| 1)) (= |ULTIMATE.start___main_#t~varargs186#1.offset| 0) (<= 0 |ULTIMATE.start_getopt32_~applet_opts#1.offset|) (= 7 ~opt_complementary~0.base) (= |ULTIMATE.start_getopt32_~spec_flgs~0#1| 0) (<= 0 |ULTIMATE.start_getopt32_~s~0#1.offset|) (not (= |ULTIMATE.start_getopt32_~c~0#1| 0)) (= |ULTIMATE.start_getopt32_~flags~0#1| 0) (= ~opt_complementary~0.offset 0) (= |ULTIMATE.start_getopt32_#varArgs#1.offset| 0) (= |ULTIMATE.start_getopt32_~s~0#1.base| 8) (<= 0 |ULTIMATE.start_getopt32_~c~0#1|) (= |ULTIMATE.start_getopt32_~min_arg~0#1| 0) (= 0 |ULTIMATE.start_getopt32_#in~applet_opts#1.offset|) (<= 0 |ULTIMATE.start_getopt32_~on_off~0#1.offset|) (<= |ULTIMATE.start_getopt32_~applet_opts#1.offset| 1) (= |ULTIMATE.start_getopt32_~#complementary~0#1.offset| 0) (= |ULTIMATE.start_getopt32_~argc~0#1| 1) (= |ULTIMATE.start_getopt32_#in~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~requires~0#1| 0))' at error location [2023-12-02 15:30:02,596 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:30:02,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:30:02,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2023-12-02 15:30:02,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588289121] [2023-12-02 15:30:02,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:30:02,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 15:30:02,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:30:02,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 15:30:02,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=169, Invalid=1548, Unknown=5, NotChecked=0, Total=1722 [2023-12-02 15:30:02,598 INFO L87 Difference]: Start difference. First operand 505 states and 656 transitions. Second operand has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:30:03,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:30:03,144 INFO L93 Difference]: Finished difference Result 982 states and 1287 transitions. [2023-12-02 15:30:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 15:30:03,145 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 87 [2023-12-02 15:30:03,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:30:03,147 INFO L225 Difference]: With dead ends: 982 [2023-12-02 15:30:03,147 INFO L226 Difference]: Without dead ends: 517 [2023-12-02 15:30:03,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 222 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 692 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=169, Invalid=1548, Unknown=5, NotChecked=0, Total=1722 [2023-12-02 15:30:03,149 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 2 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2461 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:30:03,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2461 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:30:03,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2023-12-02 15:30:03,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 517. [2023-12-02 15:30:03,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 433 states have (on average 1.4272517321016167) internal successors, (618), 485 states have internal predecessors, (618), 28 states have call successors, (28), 10 states have call predecessors, (28), 8 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-12-02 15:30:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 668 transitions. [2023-12-02 15:30:03,186 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 668 transitions. Word has length 87 [2023-12-02 15:30:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:30:03,186 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 668 transitions. [2023-12-02 15:30:03,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.3076923076923075) internal successors, (69), 13 states have internal predecessors, (69), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 15:30:03,187 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 668 transitions. [2023-12-02 15:30:03,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 15:30:03,187 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:30:03,188 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 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] [2023-12-02 15:30:03,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 15:30:03,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:30:03,388 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:30:03,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:30:03,388 INFO L85 PathProgramCache]: Analyzing trace with hash -899233354, now seen corresponding path program 2 times [2023-12-02 15:30:03,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:30:03,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370194123] [2023-12-02 15:30:03,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:30:03,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:30:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:30:04,126 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 15:30:04,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:30:04,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370194123] [2023-12-02 15:30:04,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370194123] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:30:04,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856519924] [2023-12-02 15:30:04,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:30:04,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:30:04,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:30:04,128 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:30:04,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 15:30:05,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-12-02 15:30:05,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:30:05,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 15:30:05,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:30:05,165 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 15:30:05,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:30:05,234 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 15:30:05,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856519924] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:30:05,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [607182837] [2023-12-02 15:30:05,236 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 15:30:05,236 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:30:05,237 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:30:05,237 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:30:05,237 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:30:21,177 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:30:21,200 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 117 for LOIs [2023-12-02 15:30:21,549 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:30:33,373 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '42846#(and (= |~#bb_msg_standard_output~0.base| 17) (= ~option_mask32~0 0) (= ~xfunc_error_retval~0 1) (<= 1 |#StackHeapBarrier|) (= |~#bb_errno_location~0.offset| 0) (= |ULTIMATE.start_getopt32_~applet_opts#1.base| 8) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (= ~optind~0 1) (= |ULTIMATE.start___main_~argv#1.offset| 0) (= 18 |~#bb_null_long_options~0.base|) (= |ULTIMATE.start_getopt32_#in~argv#1.offset| 0) (= |ULTIMATE.start_getopt32_~argv#1.offset| 0) (= |~#bb_errno_location~0.base| 15) (= |ULTIMATE.start_getopt32_~p~3#1.offset| 0) (= 0 |ULTIMATE.start_getopt32_~long_options~0#1.offset|) (<= |ULTIMATE.start_getopt32_~c~0#1| 31) (= 19 |~#die_jmp~0.base|) (= ~msg_eol~0.base 3) (<= 2147483648 |ULTIMATE.start_getopt32_#t~nondet79#1|) (= 0 (+ |ULTIMATE.start_getopt32_~max_arg~0#1| 1)) (<= |ULTIMATE.start_main_~argc~1#1| 10000) (= |ULTIMATE.start___main_#t~varargs186#1.offset| 0) (= ~bb_errno~0.base 15) (<= 1 |ULTIMATE.start_main_~argc~1#1|) (<= 0 |ULTIMATE.start_getopt32_~applet_opts#1.offset|) (<= 2 |ULTIMATE.start_getopt32_~#complementary~0#1.base|) (= 7 ~opt_complementary~0.base) (= |ULTIMATE.start_getopt32_~long_options~0#1.base| 18) (= |ULTIMATE.start_getopt32_~spec_flgs~0#1| 0) (<= 0 |ULTIMATE.start_getopt32_~s~0#1.offset|) (not (= |ULTIMATE.start_getopt32_~c~0#1| 0)) (= |ULTIMATE.start___main_#in~argv#1.offset| 0) (<= 2 |ULTIMATE.start_getopt32_~on_off~0#1.base|) (= |ULTIMATE.start_getopt32_~flags~0#1| 0) (<= |ULTIMATE.start___main_~argc#1| 10000) (= |~#bb_null_long_options~0.offset| 0) (= ~opt_complementary~0.offset 0) (= |ULTIMATE.start_main_~mem_track~0#1.offset| 0) (= ~msg_eol~0.offset 0) (= |ULTIMATE.start_getopt32_#varArgs#1.offset| 0) (= |~#bb_msg_memory_exhausted~0.offset| 0) (= ~applet_name~0.offset 0) (= ~applet_long_options~0.base 0) (= |ULTIMATE.start_getopt32_~s~0#1.base| 8) (= ~logmode~0 1) (<= 0 |ULTIMATE.start_getopt32_~c~0#1|) (= |ULTIMATE.start_getopt32_~min_arg~0#1| 0) (<= 1 |ULTIMATE.start___main_#in~argc#1|) (= 20 |~#dummy_utmp~0.base|) (= |~#bb_msg_standard_output~0.offset| 0) (= 0 |ULTIMATE.start_getopt32_#in~applet_opts#1.offset|) (= ~bb_errno~0.offset 0) (= |~#dummy_utmp~0.offset| 0) (= |ULTIMATE.start_main_~argv~0#1.offset| 0) (<= |ULTIMATE.start___main_#in~argc#1| 10000) (<= 0 |ULTIMATE.start_getopt32_~on_off~0#1.offset|) (= |~#die_jmp~0.offset| 0) (= ~applet_long_options~0.offset 0) (<= |ULTIMATE.start_getopt32_~applet_opts#1.offset| 1) (= |ULTIMATE.start_getopt32_~#complementary~0#1.offset| 0) (= |ULTIMATE.start_getopt32_~argc~0#1| 1) (= |ULTIMATE.start_getopt32_#in~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~requires~0#1| 0) (= |~#bb_msg_memory_exhausted~0.base| 16) (= ~die_sleep~0 0) (<= 1 |ULTIMATE.start___main_~argc#1|))' at error location [2023-12-02 15:30:33,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:30:33,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:30:33,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-12-02 15:30:33,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186812655] [2023-12-02 15:30:33,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:30:33,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 15:30:33,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:30:33,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 15:30:33,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1427, Unknown=0, NotChecked=0, Total=1560 [2023-12-02 15:30:33,375 INFO L87 Difference]: Start difference. First operand 517 states and 668 transitions. Second operand has 10 states, 7 states have (on average 5.857142857142857) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:30:34,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:30:34,140 INFO L93 Difference]: Finished difference Result 937 states and 1245 transitions. [2023-12-02 15:30:34,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 15:30:34,141 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 5.857142857142857) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 99 [2023-12-02 15:30:34,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:30:34,143 INFO L225 Difference]: With dead ends: 937 [2023-12-02 15:30:34,143 INFO L226 Difference]: Without dead ends: 531 [2023-12-02 15:30:34,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 260 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 552 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=187, Invalid=1883, Unknown=0, NotChecked=0, Total=2070 [2023-12-02 15:30:34,145 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 9 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 15:30:34,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1642 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 15:30:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2023-12-02 15:30:34,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 527. [2023-12-02 15:30:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 442 states have (on average 1.4298642533936652) internal successors, (632), 494 states have internal predecessors, (632), 28 states have call successors, (28), 11 states have call predecessors, (28), 9 states have return successors, (23), 21 states have call predecessors, (23), 22 states have call successors, (23) [2023-12-02 15:30:34,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 683 transitions. [2023-12-02 15:30:34,202 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 683 transitions. Word has length 99 [2023-12-02 15:30:34,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:30:34,203 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 683 transitions. [2023-12-02 15:30:34,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 5.857142857142857) internal successors, (41), 10 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:30:34,203 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 683 transitions. [2023-12-02 15:30:34,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 15:30:34,203 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:30:34,204 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 4, 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] [2023-12-02 15:30:34,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 15:30:34,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 15:30:34,404 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:30:34,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:30:34,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1812557062, now seen corresponding path program 3 times [2023-12-02 15:30:34,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:30:34,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85190450] [2023-12-02 15:30:34,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:30:34,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:30:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:30:35,205 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 15:30:35,205 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:30:35,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85190450] [2023-12-02 15:30:35,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85190450] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:30:35,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106775261] [2023-12-02 15:30:35,206 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:30:35,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:30:35,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:30:35,207 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:30:35,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 15:30:35,854 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:30:35,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:30:35,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 15:30:35,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:30:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 15:30:35,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:30:36,130 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 15:30:36,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106775261] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:30:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649352886] [2023-12-02 15:30:36,132 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 15:30:36,132 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:30:36,132 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:30:36,132 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:30:36,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:31:03,584 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:31:03,607 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 222 for LOIs [2023-12-02 15:31:04,594 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:31:17,320 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '45286#(and (= |ULTIMATE.start_getopt32_~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~p~3#1.offset| 0) (<= |ULTIMATE.start_getopt32_~c~0#1| 31) (<= 2147483648 |ULTIMATE.start_getopt32_#t~nondet79#1|) (= 0 (+ |ULTIMATE.start_getopt32_~max_arg~0#1| 1)) (= |ULTIMATE.start___main_#t~varargs186#1.offset| 0) (<= 0 |ULTIMATE.start_getopt32_~applet_opts#1.offset|) (= 7 ~opt_complementary~0.base) (= |ULTIMATE.start_getopt32_~spec_flgs~0#1| 0) (<= 0 |ULTIMATE.start_getopt32_~s~0#1.offset|) (not (= |ULTIMATE.start_getopt32_~c~0#1| 0)) (= |ULTIMATE.start_getopt32_~flags~0#1| 0) (= ~opt_complementary~0.offset 0) (= |ULTIMATE.start_getopt32_#varArgs#1.offset| 0) (= |ULTIMATE.start_getopt32_~s~0#1.base| 8) (<= 0 |ULTIMATE.start_getopt32_~c~0#1|) (= |ULTIMATE.start_getopt32_~min_arg~0#1| 0) (= 0 |ULTIMATE.start_getopt32_#in~applet_opts#1.offset|) (<= 0 |ULTIMATE.start_getopt32_~on_off~0#1.offset|) (<= |ULTIMATE.start_getopt32_~applet_opts#1.offset| 1) (= |ULTIMATE.start_getopt32_~#complementary~0#1.offset| 0) (= |ULTIMATE.start_getopt32_~argc~0#1| 1) (= |ULTIMATE.start_getopt32_#in~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~requires~0#1| 0))' at error location [2023-12-02 15:31:17,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:31:17,320 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:31:17,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-12-02 15:31:17,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355253135] [2023-12-02 15:31:17,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:31:17,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-02 15:31:17,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:17,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-02 15:31:17,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=1958, Unknown=5, NotChecked=0, Total=2162 [2023-12-02 15:31:17,323 INFO L87 Difference]: Start difference. First operand 527 states and 683 transitions. Second operand has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:31:19,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:19,267 INFO L93 Difference]: Finished difference Result 964 states and 1296 transitions. [2023-12-02 15:31:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-12-02 15:31:19,268 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 102 [2023-12-02 15:31:19,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:19,271 INFO L225 Difference]: With dead ends: 964 [2023-12-02 15:31:19,271 INFO L226 Difference]: Without dead ends: 550 [2023-12-02 15:31:19,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 265 SyntacticMatches, 2 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 980 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=432, Invalid=3103, Unknown=5, NotChecked=0, Total=3540 [2023-12-02 15:31:19,275 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 17 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2443 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:19,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2443 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-02 15:31:19,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2023-12-02 15:31:19,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 546. [2023-12-02 15:31:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 459 states have (on average 1.4357298474945535) internal successors, (659), 513 states have internal predecessors, (659), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (27), 21 states have call predecessors, (27), 22 states have call successors, (27) [2023-12-02 15:31:19,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 714 transitions. [2023-12-02 15:31:19,315 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 714 transitions. Word has length 102 [2023-12-02 15:31:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:19,315 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 714 transitions. [2023-12-02 15:31:19,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.125) internal successors, (50), 18 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 15:31:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 714 transitions. [2023-12-02 15:31:19,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-12-02 15:31:19,316 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:19,316 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:31:19,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-12-02 15:31:19,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:19,517 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:31:19,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1458026539, now seen corresponding path program 3 times [2023-12-02 15:31:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:19,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181695093] [2023-12-02 15:31:19,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:19,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-12-02 15:31:19,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:19,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181695093] [2023-12-02 15:31:19,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181695093] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:31:19,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447335992] [2023-12-02 15:31:19,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-02 15:31:19,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:19,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:19,884 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:19,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-12-02 15:31:20,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-02 15:31:20,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 15:31:20,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 15:31:20,431 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:20,473 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-12-02 15:31:20,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:31:20,598 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-12-02 15:31:20,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447335992] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:31:20,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [798284911] [2023-12-02 15:31:20,600 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-12-02 15:31:20,600 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:31:20,600 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:31:20,601 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:31:20,601 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:31:31,986 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:31:32,010 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:31:38,449 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '47822#(and (= |ULTIMATE.start_getopt32_~applet_opts#1.base| 8) (= 0 (+ |ULTIMATE.start_getopt32_~max_arg~0#1| 1)) (= |ULTIMATE.start___main_#t~varargs186#1.offset| 0) (= 7 ~opt_complementary~0.base) (= |ULTIMATE.start_getopt32_~spec_flgs~0#1| 0) (= |ULTIMATE.start_getopt32_~flags~0#1| 0) (= ~opt_complementary~0.offset 0) (<= 2147483647 |ULTIMATE.start_getopt32_~argc~0#1|) (= |ULTIMATE.start_getopt32_#varArgs#1.offset| 0) (= |ULTIMATE.start_getopt32_~min_arg~0#1| 0) (= |ULTIMATE.start_getopt32_~applet_opts#1.offset| 0) (= 0 |ULTIMATE.start_getopt32_#in~applet_opts#1.offset|) (= |ULTIMATE.start_getopt32_~#complementary~0#1.offset| 0) (= |ULTIMATE.start_getopt32_#in~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~requires~0#1| 0) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_getopt32_~argv#1.base|) (+ |ULTIMATE.start_getopt32_~argv#1.offset| (* 8 |ULTIMATE.start_getopt32_~argc~0#1|))) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_getopt32_~argv#1.base|) (+ |ULTIMATE.start_getopt32_~argv#1.offset| (* 8 |ULTIMATE.start_getopt32_~argc~0#1|))) 0))))' at error location [2023-12-02 15:31:38,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:31:38,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:31:38,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2023-12-02 15:31:38,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543047708] [2023-12-02 15:31:38,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:31:38,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 15:31:38,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:31:38,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 15:31:38,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 15:31:38,451 INFO L87 Difference]: Start difference. First operand 546 states and 714 transitions. Second operand has 17 states, 16 states have (on average 5.0) internal successors, (80), 17 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:40,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:31:40,811 INFO L93 Difference]: Finished difference Result 4035 states and 5715 transitions. [2023-12-02 15:31:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-02 15:31:40,811 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.0) internal successors, (80), 17 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 102 [2023-12-02 15:31:40,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:31:40,828 INFO L225 Difference]: With dead ends: 4035 [2023-12-02 15:31:40,828 INFO L226 Difference]: Without dead ends: 4034 [2023-12-02 15:31:40,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 15:31:40,830 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 5340 mSDsluCounter, 5452 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5438 SdHoareTripleChecker+Valid, 5859 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-12-02 15:31:40,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5438 Valid, 5859 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-12-02 15:31:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4034 states. [2023-12-02 15:31:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4034 to 578. [2023-12-02 15:31:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 491 states have (on average 1.4236252545824848) internal successors, (699), 545 states have internal predecessors, (699), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (27), 21 states have call predecessors, (27), 22 states have call successors, (27) [2023-12-02 15:31:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 754 transitions. [2023-12-02 15:31:40,920 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 754 transitions. Word has length 102 [2023-12-02 15:31:40,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:31:40,920 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 754 transitions. [2023-12-02 15:31:40,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.0) internal successors, (80), 17 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 15:31:40,920 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 754 transitions. [2023-12-02 15:31:40,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-12-02 15:31:40,921 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:31:40,921 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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] [2023-12-02 15:31:40,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-12-02 15:31:41,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:41,121 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:31:41,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:31:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash 2072107386, now seen corresponding path program 4 times [2023-12-02 15:31:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:31:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235889925] [2023-12-02 15:31:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:31:41,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:31:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:42,299 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 15:31:42,299 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:31:42,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235889925] [2023-12-02 15:31:42,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235889925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:31:42,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998734074] [2023-12-02 15:31:42,300 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-02 15:31:42,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:31:42,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:31:42,301 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:31:42,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-12-02 15:31:44,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:31:44,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 26 conjunts are in the unsatisfiable core [2023-12-02 15:31:44,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:31:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 15:31:45,046 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:31:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 15:31:46,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998734074] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 15:31:46,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1487730898] [2023-12-02 15:31:46,195 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 15:31:46,195 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 15:31:46,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 15:31:46,196 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 15:31:46,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 15:32:11,835 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 114 for LOIs [2023-12-02 15:32:11,859 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 222 for LOIs [2023-12-02 15:32:14,887 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 15:32:29,950 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '53963#(and (= |ULTIMATE.start_getopt32_~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~p~3#1.offset| 0) (<= |ULTIMATE.start_getopt32_~c~0#1| 31) (<= 2147483648 |ULTIMATE.start_getopt32_#t~nondet79#1|) (= 0 (+ |ULTIMATE.start_getopt32_~max_arg~0#1| 1)) (= |ULTIMATE.start___main_#t~varargs186#1.offset| 0) (<= 0 |ULTIMATE.start_getopt32_~applet_opts#1.offset|) (= 7 ~opt_complementary~0.base) (= |ULTIMATE.start_getopt32_~spec_flgs~0#1| 0) (<= 0 |ULTIMATE.start_getopt32_~s~0#1.offset|) (not (= |ULTIMATE.start_getopt32_~c~0#1| 0)) (= |ULTIMATE.start_getopt32_~flags~0#1| 0) (= ~opt_complementary~0.offset 0) (= |ULTIMATE.start_getopt32_#varArgs#1.offset| 0) (= |ULTIMATE.start_getopt32_~s~0#1.base| 8) (<= 0 |ULTIMATE.start_getopt32_~c~0#1|) (= |ULTIMATE.start_getopt32_~min_arg~0#1| 0) (= 0 |ULTIMATE.start_getopt32_#in~applet_opts#1.offset|) (<= 0 |ULTIMATE.start_getopt32_~on_off~0#1.offset|) (<= |ULTIMATE.start_getopt32_~applet_opts#1.offset| 1) (= |ULTIMATE.start_getopt32_~#complementary~0#1.offset| 0) (= |ULTIMATE.start_getopt32_~argc~0#1| 1) (= |ULTIMATE.start_getopt32_#in~applet_opts#1.base| 8) (= |ULTIMATE.start_getopt32_~requires~0#1| 0))' at error location [2023-12-02 15:32:29,950 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 15:32:29,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:32:29,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2023-12-02 15:32:29,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874897398] [2023-12-02 15:32:29,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:32:29,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-02 15:32:29,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 15:32:29,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-02 15:32:29,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=3828, Unknown=5, NotChecked=0, Total=4290 [2023-12-02 15:32:29,953 INFO L87 Difference]: Start difference. First operand 578 states and 754 transitions. Second operand has 37 states, 34 states have (on average 2.0) internal successors, (68), 37 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:33:05,369 WARN L293 SmtUtils]: Spent 19.56s on a formula simplification that was a NOOP. DAG size: 69 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 15:33:08,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:33:08,684 INFO L93 Difference]: Finished difference Result 1050 states and 1426 transitions. [2023-12-02 15:33:08,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-12-02 15:33:08,685 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 2.0) internal successors, (68), 37 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 108 [2023-12-02 15:33:08,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:33:08,688 INFO L225 Difference]: With dead ends: 1050 [2023-12-02 15:33:08,688 INFO L226 Difference]: Without dead ends: 618 [2023-12-02 15:33:08,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 270 SyntacticMatches, 2 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 52.1s TimeCoverageRelationStatistics Valid=1469, Invalid=8031, Unknown=6, NotChecked=0, Total=9506 [2023-12-02 15:33:08,692 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 41 mSDsluCounter, 4478 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 4889 SdHoareTripleChecker+Invalid, 1597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 15:33:08,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 4889 Invalid, 1597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 15:33:08,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2023-12-02 15:33:08,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 608. [2023-12-02 15:33:08,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 521 states have (on average 1.4222648752399232) internal successors, (741), 575 states have internal predecessors, (741), 28 states have call successors, (28), 11 states have call predecessors, (28), 11 states have return successors, (27), 21 states have call predecessors, (27), 22 states have call successors, (27) [2023-12-02 15:33:08,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 796 transitions. [2023-12-02 15:33:08,745 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 796 transitions. Word has length 108 [2023-12-02 15:33:08,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:33:08,745 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 796 transitions. [2023-12-02 15:33:08,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 2.0) internal successors, (68), 37 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-12-02 15:33:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 796 transitions. [2023-12-02 15:33:08,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-12-02 15:33:08,746 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:33:08,746 INFO L195 NwaCegarLoop]: trace histogram [22, 10, 10, 10, 10, 10, 10, 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] [2023-12-02 15:33:08,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-12-02 15:33:08,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-12-02 15:33:08,947 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 69 more)] === [2023-12-02 15:33:08,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:33:08,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1166817670, now seen corresponding path program 5 times [2023-12-02 15:33:08,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 15:33:08,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103881085] [2023-12-02 15:33:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:33:08,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 15:33:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:33:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2023-12-02 15:33:10,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 15:33:10,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103881085] [2023-12-02 15:33:10,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103881085] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:33:10,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646689269] [2023-12-02 15:33:10,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 15:33:10,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:33:10,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:33:10,558 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:33:10,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0305a621-61f6-4c99-acbb-3f6bd23ea35d/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process