./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/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_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/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_7ae26004-abeb-4791-ac4a-ac65767145d8/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 2b93d9cdf019464a7132a47df13bc38f66feab56a28fc9b80b5d3e4c2c3e53cd --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:17:12,944 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:17:13,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 18:17:13,022 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:17:13,022 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:17:13,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:17:13,052 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:17:13,053 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:17:13,054 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:17:13,054 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:17:13,055 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:17:13,055 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:17:13,056 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:17:13,057 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:17:13,057 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:17:13,058 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:17:13,058 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:17:13,059 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:17:13,059 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:17:13,060 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:17:13,061 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:17:13,062 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:17:13,062 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:17:13,063 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:17:13,063 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:17:13,064 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:17:13,064 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:17:13,065 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:17:13,065 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:17:13,066 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 18:17:13,066 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:17:13,067 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:17:13,067 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:17:13,068 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:17:13,068 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 18:17:13,069 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:17:13,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:17:13,070 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:17:13,070 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:17:13,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:17:13,071 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:17:13,072 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:17:13,072 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:17:13,072 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:17:13,072 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:17:13,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:17:13,072 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_7ae26004-abeb-4791-ac4a-ac65767145d8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b93d9cdf019464a7132a47df13bc38f66feab56a28fc9b80b5d3e4c2c3e53cd [2023-12-02 18:17:13,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:17:13,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:17:13,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:17:13,354 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:17:13,355 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:17:13,356 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-1.i [2023-12-02 18:17:16,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:17:16,770 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:17:16,770 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-1.i [2023-12-02 18:17:16,794 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/data/df0004fe3/9146a4d770ce4d038b70b238ee70a605/FLAG6af244803 [2023-12-02 18:17:16,808 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/data/df0004fe3/9146a4d770ce4d038b70b238ee70a605 [2023-12-02 18:17:16,811 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:17:16,813 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:17:16,814 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:17:16,814 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:17:16,819 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:17:16,820 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:17:16" (1/1) ... [2023-12-02 18:17:16,821 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd960e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:16, skipping insertion in model container [2023-12-02 18:17:16,821 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:17:16" (1/1) ... [2023-12-02 18:17:16,888 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:17:18,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:17:18,059 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:17:18,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:17:18,436 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:17:18,436 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:17:18,444 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:17:18,445 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18 WrapperNode [2023-12-02 18:17:18,445 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:17:18,446 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:17:18,447 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:17:18,447 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:17:18,455 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,503 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,561 INFO L138 Inliner]: procedures = 615, calls = 250, calls flagged for inlining = 25, calls inlined = 23, statements flattened = 738 [2023-12-02 18:17:18,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:17:18,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:17:18,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:17:18,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:17:18,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,586 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,587 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,635 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,642 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,651 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:17:18,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:17:18,671 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:17:18,672 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:17:18,672 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (1/1) ... [2023-12-02 18:17:18,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:17:18,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:18,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:17:18,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:17:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure execvp [2023-12-02 18:17:18,742 INFO L138 BoogieDeclarations]: Found implementation of procedure execvp [2023-12-02 18:17:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-12-02 18:17:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:17:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 18:17:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 18:17:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:17:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:17:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-12-02 18:17:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:17:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:17:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:17:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:17:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 18:17:18,745 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 18:17:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 18:17:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 18:17:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-12-02 18:17:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-12-02 18:17:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:17:18,746 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:17:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:17:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:17:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 18:17:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:17:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:17:19,106 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:17:19,108 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:17:19,896 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:17:20,027 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:17:20,027 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-12-02 18:17:20,028 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:17:20 BoogieIcfgContainer [2023-12-02 18:17:20,028 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:17:20,030 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:17:20,031 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:17:20,033 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:17:20,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:17:16" (1/3) ... [2023-12-02 18:17:20,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8827ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:17:20, skipping insertion in model container [2023-12-02 18:17:20,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:17:18" (2/3) ... [2023-12-02 18:17:20,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a8827ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:17:20, skipping insertion in model container [2023-12-02 18:17:20,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:17:20" (3/3) ... [2023-12-02 18:17:20,036 INFO L112 eAbstractionObserver]: Analyzing ICFG chroot-incomplete-1.i [2023-12-02 18:17:20,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:17:20,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-12-02 18:17:20,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:17:20,105 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;@63e5aaac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:17:20,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-12-02 18:17:20,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 121 states have (on average 1.6694214876033058) internal successors, (202), 163 states have internal predecessors, (202), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 18:17:20,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 18:17:20,118 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:20,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 18:17:20,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:20,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:20,124 INFO L85 PathProgramCache]: Analyzing trace with hash 582261, now seen corresponding path program 1 times [2023-12-02 18:17:20,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:20,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547202995] [2023-12-02 18:17:20,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:20,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:20,569 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 18:17:20,569 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:20,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547202995] [2023-12-02 18:17:20,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547202995] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:20,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:17:20,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:17:20,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295866627] [2023-12-02 18:17:20,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:20,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:20,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:20,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:17:20,612 INFO L87 Difference]: Start difference. First operand has 183 states, 121 states have (on average 1.6694214876033058) internal successors, (202), 163 states have internal predecessors, (202), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) 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 18:17:20,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:20,969 INFO L93 Difference]: Finished difference Result 361 states and 466 transitions. [2023-12-02 18:17:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:20,972 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 18:17:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:20,983 INFO L225 Difference]: With dead ends: 361 [2023-12-02 18:17:20,983 INFO L226 Difference]: Without dead ends: 178 [2023-12-02 18:17:20,990 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 18:17:20,994 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 1 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:20,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 382 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:17:21,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-02 18:17:21,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-12-02 18:17:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 118 states have (on average 1.6016949152542372) internal successors, (189), 161 states have internal predecessors, (189), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:21,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 216 transitions. [2023-12-02 18:17:21,054 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 216 transitions. Word has length 3 [2023-12-02 18:17:21,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:21,055 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 216 transitions. [2023-12-02 18:17:21,055 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 18:17:21,055 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 216 transitions. [2023-12-02 18:17:21,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 18:17:21,056 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:21,056 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-12-02 18:17:21,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:17:21,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:21,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:21,058 INFO L85 PathProgramCache]: Analyzing trace with hash 166627576, now seen corresponding path program 1 times [2023-12-02 18:17:21,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:21,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245682868] [2023-12-02 18:17:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:21,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:21,237 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 18:17:21,238 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:21,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245682868] [2023-12-02 18:17:21,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245682868] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:21,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239185349] [2023-12-02 18:17:21,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:21,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:21,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:21,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:21,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 18:17:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:21,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:17:21,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:21,541 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 18:17:21,541 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:21,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239185349] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:21,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:17:21,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-12-02 18:17:21,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480412749] [2023-12-02 18:17:21,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:21,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:17:21,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:21,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:17:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:17:21,545 INFO L87 Difference]: Start difference. First operand 178 states and 216 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 18:17:21,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:21,971 INFO L93 Difference]: Finished difference Result 178 states and 216 transitions. [2023-12-02 18:17:21,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:17:21,972 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 18:17:21,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:21,974 INFO L225 Difference]: With dead ends: 178 [2023-12-02 18:17:21,975 INFO L226 Difference]: Without dead ends: 177 [2023-12-02 18:17:21,975 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 18:17:21,977 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 3 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:21,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 372 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:17:21,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-02 18:17:21,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-12-02 18:17:21,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 118 states have (on average 1.5932203389830508) internal successors, (188), 160 states have internal predecessors, (188), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:22,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 215 transitions. [2023-12-02 18:17:22,000 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 215 transitions. Word has length 6 [2023-12-02 18:17:22,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:22,001 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 215 transitions. [2023-12-02 18:17:22,001 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 18:17:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 215 transitions. [2023-12-02 18:17:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 18:17:22,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:22,002 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-12-02 18:17:22,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:17:22,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:22,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:22,212 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:22,212 INFO L85 PathProgramCache]: Analyzing trace with hash 870487922, now seen corresponding path program 1 times [2023-12-02 18:17:22,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:22,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263566212] [2023-12-02 18:17:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:22,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:22,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:22,341 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 18:17:22,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:22,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263566212] [2023-12-02 18:17:22,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263566212] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:22,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:17:22,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:17:22,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420679202] [2023-12-02 18:17:22,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:22,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:22,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:22,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:22,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:17:22,345 INFO L87 Difference]: Start difference. First operand 177 states and 215 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 18:17:22,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:22,595 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2023-12-02 18:17:22,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:22,596 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 18:17:22,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:22,597 INFO L225 Difference]: With dead ends: 177 [2023-12-02 18:17:22,597 INFO L226 Difference]: Without dead ends: 176 [2023-12-02 18:17:22,598 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 18:17:22,599 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 0 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:22,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 372 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:17:22,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-12-02 18:17:22,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2023-12-02 18:17:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 116 states have (on average 1.5948275862068966) internal successors, (185), 157 states have internal predecessors, (185), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 212 transitions. [2023-12-02 18:17:22,619 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 212 transitions. Word has length 7 [2023-12-02 18:17:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:22,619 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 212 transitions. [2023-12-02 18:17:22,620 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 18:17:22,620 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 212 transitions. [2023-12-02 18:17:22,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 18:17:22,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:22,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:17:22,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:17:22,621 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:22,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:22,622 INFO L85 PathProgramCache]: Analyzing trace with hash -746171465, now seen corresponding path program 1 times [2023-12-02 18:17:22,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:22,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347684628] [2023-12-02 18:17:22,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:22,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:22,762 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 18:17:22,762 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347684628] [2023-12-02 18:17:22,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347684628] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:22,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264427125] [2023-12-02 18:17:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:22,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:22,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:22,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:22,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 18:17:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:23,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:17:23,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:23,036 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 18:17:23,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:23,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264427125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:23,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:17:23,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 18:17:23,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496073290] [2023-12-02 18:17:23,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:23,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:23,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:23,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:23,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:17:23,039 INFO L87 Difference]: Start difference. First operand 174 states and 212 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 18:17:23,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:23,249 INFO L93 Difference]: Finished difference Result 174 states and 212 transitions. [2023-12-02 18:17:23,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:23,250 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 18:17:23,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:23,252 INFO L225 Difference]: With dead ends: 174 [2023-12-02 18:17:23,252 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 18:17:23,253 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 18:17:23,254 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 61 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:23,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 307 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:17:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 18:17:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-12-02 18:17:23,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 116 states have (on average 1.5775862068965518) internal successors, (183), 155 states have internal predecessors, (183), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:23,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 210 transitions. [2023-12-02 18:17:23,290 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 210 transitions. Word has length 9 [2023-12-02 18:17:23,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:23,291 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 210 transitions. [2023-12-02 18:17:23,292 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 18:17:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 210 transitions. [2023-12-02 18:17:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 18:17:23,292 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:23,293 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:17:23,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 18:17:23,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:23,493 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:23,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1656478564, now seen corresponding path program 1 times [2023-12-02 18:17:23,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:23,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99866617] [2023-12-02 18:17:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:23,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:23,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:23,637 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 18:17:23,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:23,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99866617] [2023-12-02 18:17:23,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99866617] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:23,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011726600] [2023-12-02 18:17:23,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:23,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:23,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:23,640 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:23,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 18:17:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:23,886 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:17:23,888 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:23,906 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 18:17:23,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:17:23,937 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 18:17:23,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011726600] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:17:23,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1513358576] [2023-12-02 18:17:23,956 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 18:17:23,956 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:17:23,959 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:17:23,963 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:17:23,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:17:28,818 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 104 for LOIs [2023-12-02 18:17:28,844 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:17:29,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1513358576] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:29,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:17:29,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-12-02 18:17:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265915892] [2023-12-02 18:17:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:29,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 18:17:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 18:17:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 18:17:29,999 INFO L87 Difference]: Start difference. First operand 172 states and 210 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 18:17:31,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:31,918 INFO L93 Difference]: Finished difference Result 174 states and 211 transitions. [2023-12-02 18:17:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:17:31,918 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 18:17:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:31,920 INFO L225 Difference]: With dead ends: 174 [2023-12-02 18:17:31,920 INFO L226 Difference]: Without dead ends: 172 [2023-12-02 18:17:31,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 18:17:31,921 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 5 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:31,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 887 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-02 18:17:31,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2023-12-02 18:17:31,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2023-12-02 18:17:31,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 117 states have (on average 1.5555555555555556) internal successors, (182), 154 states have internal predecessors, (182), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:31,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 209 transitions. [2023-12-02 18:17:31,934 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 209 transitions. Word has length 10 [2023-12-02 18:17:31,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:31,934 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 209 transitions. [2023-12-02 18:17:31,934 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 18:17:31,934 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 209 transitions. [2023-12-02 18:17:31,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 18:17:31,935 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:31,935 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:17:31,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 18:17:32,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:32,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:32,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:32,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1692467616, now seen corresponding path program 1 times [2023-12-02 18:17:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:32,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611741925] [2023-12-02 18:17:32,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:32,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:32,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:32,268 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 18:17:32,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:32,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611741925] [2023-12-02 18:17:32,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611741925] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:32,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613668722] [2023-12-02 18:17:32,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:32,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:32,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:32,271 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:32,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 18:17:32,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:32,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:17:32,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:32,514 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 18:17:32,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:32,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613668722] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:32,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:17:32,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 18:17:32,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147989653] [2023-12-02 18:17:32,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:32,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:32,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:32,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:32,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:17:32,517 INFO L87 Difference]: Start difference. First operand 172 states and 209 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 18:17:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:32,710 INFO L93 Difference]: Finished difference Result 172 states and 209 transitions. [2023-12-02 18:17:32,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:32,711 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 18:17:32,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:32,712 INFO L225 Difference]: With dead ends: 172 [2023-12-02 18:17:32,712 INFO L226 Difference]: Without dead ends: 171 [2023-12-02 18:17:32,712 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 18:17:32,713 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 7 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:32,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 353 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:17:32,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2023-12-02 18:17:32,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2023-12-02 18:17:32,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 117 states have (on average 1.547008547008547) internal successors, (181), 153 states have internal predecessors, (181), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:32,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 208 transitions. [2023-12-02 18:17:32,726 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 208 transitions. Word has length 15 [2023-12-02 18:17:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:32,726 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 208 transitions. [2023-12-02 18:17:32,726 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 18:17:32,726 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 208 transitions. [2023-12-02 18:17:32,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 18:17:32,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:32,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:17:32,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-02 18:17:32,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:32,927 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:32,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:32,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1692474972, now seen corresponding path program 1 times [2023-12-02 18:17:32,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:32,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995762338] [2023-12-02 18:17:32,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:32,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:33,054 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 18:17:33,054 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995762338] [2023-12-02 18:17:33,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995762338] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:33,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033244592] [2023-12-02 18:17:33,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:33,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:33,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:33,056 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:33,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:17:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:33,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:17:33,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:33,287 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 18:17:33,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:33,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033244592] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:33,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:17:33,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 18:17:33,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314937527] [2023-12-02 18:17:33,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:33,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:33,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:33,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:33,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:17:33,289 INFO L87 Difference]: Start difference. First operand 171 states and 208 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 18:17:33,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:33,495 INFO L93 Difference]: Finished difference Result 171 states and 208 transitions. [2023-12-02 18:17:33,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:33,495 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 18:17:33,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:33,497 INFO L225 Difference]: With dead ends: 171 [2023-12-02 18:17:33,497 INFO L226 Difference]: Without dead ends: 170 [2023-12-02 18:17:33,497 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 18:17:33,498 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 2 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:33,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 357 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:17:33,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-12-02 18:17:33,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-12-02 18:17:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 117 states have (on average 1.5384615384615385) internal successors, (180), 152 states have internal predecessors, (180), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:33,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 207 transitions. [2023-12-02 18:17:33,510 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 207 transitions. Word has length 15 [2023-12-02 18:17:33,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:33,510 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 207 transitions. [2023-12-02 18:17:33,511 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 18:17:33,511 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 207 transitions. [2023-12-02 18:17:33,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 18:17:33,512 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:33,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:17:33,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-02 18:17:33,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:33,720 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:33,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:33,720 INFO L85 PathProgramCache]: Analyzing trace with hash -926888139, now seen corresponding path program 1 times [2023-12-02 18:17:33,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:33,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769575887] [2023-12-02 18:17:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:33,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:33,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:33,869 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 18:17:33,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:33,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769575887] [2023-12-02 18:17:33,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769575887] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:33,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320517865] [2023-12-02 18:17:33,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:33,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:33,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:33,871 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:33,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 18:17:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:34,144 INFO L262 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:17:34,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:34,156 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 18:17:34,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320517865] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:34,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:17:34,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 18:17:34,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105149309] [2023-12-02 18:17:34,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:34,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:34,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:34,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:34,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:17:34,159 INFO L87 Difference]: Start difference. First operand 170 states and 207 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 18:17:34,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:34,517 INFO L93 Difference]: Finished difference Result 178 states and 217 transitions. [2023-12-02 18:17:34,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:34,518 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 18:17:34,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:34,520 INFO L225 Difference]: With dead ends: 178 [2023-12-02 18:17:34,520 INFO L226 Difference]: Without dead ends: 177 [2023-12-02 18:17:34,520 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 18:17:34,521 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 4 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:34,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 356 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:17:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-12-02 18:17:34,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 176. [2023-12-02 18:17:34,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 123 states have (on average 1.5365853658536586) internal successors, (189), 158 states have internal predecessors, (189), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 216 transitions. [2023-12-02 18:17:34,535 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 216 transitions. Word has length 16 [2023-12-02 18:17:34,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:34,536 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 216 transitions. [2023-12-02 18:17:34,536 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 18:17:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 216 transitions. [2023-12-02 18:17:34,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 18:17:34,536 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:34,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:17:34,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 18:17:34,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:34,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:34,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:34,745 INFO L85 PathProgramCache]: Analyzing trace with hash -927116184, now seen corresponding path program 1 times [2023-12-02 18:17:34,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:34,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917944259] [2023-12-02 18:17:34,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:34,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:34,882 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 18:17:34,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:34,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917944259] [2023-12-02 18:17:34,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917944259] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:34,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372021927] [2023-12-02 18:17:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:34,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:34,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:34,883 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:34,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 18:17:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:35,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:17:35,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:35,130 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 18:17:35,131 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:35,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372021927] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:35,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:17:35,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 18:17:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686683419] [2023-12-02 18:17:35,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:35,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:35,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:35,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:35,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:17:35,132 INFO L87 Difference]: Start difference. First operand 176 states and 216 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 18:17:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:35,484 INFO L93 Difference]: Finished difference Result 342 states and 422 transitions. [2023-12-02 18:17:35,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:35,485 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 18:17:35,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:35,487 INFO L225 Difference]: With dead ends: 342 [2023-12-02 18:17:35,487 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 18:17:35,488 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 18:17:35,489 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:35,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 358 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:17:35,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 18:17:35,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-12-02 18:17:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 129 states have (on average 1.5116279069767442) internal successors, (195), 164 states have internal predecessors, (195), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:35,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 222 transitions. [2023-12-02 18:17:35,504 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 222 transitions. Word has length 16 [2023-12-02 18:17:35,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:35,504 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 222 transitions. [2023-12-02 18:17:35,505 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 18:17:35,505 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 222 transitions. [2023-12-02 18:17:35,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 18:17:35,505 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:35,506 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 18:17:35,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 18:17:35,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:35,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:35,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1540111011, now seen corresponding path program 1 times [2023-12-02 18:17:35,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:35,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56494548] [2023-12-02 18:17:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:35,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:35,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:35,850 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 18:17:35,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56494548] [2023-12-02 18:17:35,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56494548] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:35,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796971491] [2023-12-02 18:17:35,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:35,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:35,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:35,852 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:35,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 18:17:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:36,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:17:36,101 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:36,110 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 18:17:36,110 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:36,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796971491] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:36,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:17:36,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 18:17:36,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888007637] [2023-12-02 18:17:36,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:36,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:36,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:36,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:17:36,112 INFO L87 Difference]: Start difference. First operand 182 states and 222 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 18:17:36,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:36,352 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2023-12-02 18:17:36,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:36,353 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 18:17:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:36,354 INFO L225 Difference]: With dead ends: 182 [2023-12-02 18:17:36,354 INFO L226 Difference]: Without dead ends: 181 [2023-12-02 18:17:36,354 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 18:17:36,355 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 2 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:36,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 355 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:17:36,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-12-02 18:17:36,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-12-02 18:17:36,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 129 states have (on average 1.503875968992248) internal successors, (194), 163 states have internal predecessors, (194), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:36,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 221 transitions. [2023-12-02 18:17:36,366 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 221 transitions. Word has length 17 [2023-12-02 18:17:36,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:36,367 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 221 transitions. [2023-12-02 18:17:36,367 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 18:17:36,367 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 221 transitions. [2023-12-02 18:17:36,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-02 18:17:36,368 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:36,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:17:36,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 18:17:36,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 18:17:36,573 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:36,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:36,573 INFO L85 PathProgramCache]: Analyzing trace with hash 498801628, now seen corresponding path program 1 times [2023-12-02 18:17:36,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:36,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991670239] [2023-12-02 18:17:36,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:36,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:36,658 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 18:17:36,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991670239] [2023-12-02 18:17:36,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991670239] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173553873] [2023-12-02 18:17:36,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:36,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:36,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:36,660 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:36,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 18:17:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:36,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:17:36,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:36,876 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 18:17:36,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:36,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173553873] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:36,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:17:36,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 18:17:36,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739919270] [2023-12-02 18:17:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:36,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:36,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:36,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:36,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:17:36,878 INFO L87 Difference]: Start difference. First operand 181 states and 221 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 18:17:37,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:37,175 INFO L93 Difference]: Finished difference Result 185 states and 225 transitions. [2023-12-02 18:17:37,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:37,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 18 [2023-12-02 18:17:37,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:37,177 INFO L225 Difference]: With dead ends: 185 [2023-12-02 18:17:37,177 INFO L226 Difference]: Without dead ends: 184 [2023-12-02 18:17:37,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 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 18:17:37,178 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:37,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:17:37,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-12-02 18:17:37,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-12-02 18:17:37,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 132 states have (on average 1.4924242424242424) internal successors, (197), 166 states have internal predecessors, (197), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:37,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 224 transitions. [2023-12-02 18:17:37,188 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 224 transitions. Word has length 18 [2023-12-02 18:17:37,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:37,189 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 224 transitions. [2023-12-02 18:17:37,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 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 18:17:37,189 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 224 transitions. [2023-12-02 18:17:37,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 18:17:37,190 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:37,190 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 18:17:37,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-02 18:17:37,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:37,392 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:37,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1216831393, now seen corresponding path program 1 times [2023-12-02 18:17:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:37,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972249551] [2023-12-02 18:17:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:37,552 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 18:17:37,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:37,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972249551] [2023-12-02 18:17:37,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972249551] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:37,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811166133] [2023-12-02 18:17:37,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:37,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:37,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:37,555 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:37,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 18:17:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:37,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:17:37,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:37,836 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 18:17:37,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:17:37,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811166133] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:37,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 18:17:37,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 18:17:37,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60150381] [2023-12-02 18:17:37,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:37,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:17:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:37,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:17:37,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:17:37,838 INFO L87 Difference]: Start difference. First operand 184 states and 224 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 18:17:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:38,184 INFO L93 Difference]: Finished difference Result 184 states and 224 transitions. [2023-12-02 18:17:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:17:38,184 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 18:17:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:38,186 INFO L225 Difference]: With dead ends: 184 [2023-12-02 18:17:38,186 INFO L226 Difference]: Without dead ends: 183 [2023-12-02 18:17:38,186 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 18:17:38,187 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:38,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 355 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:17:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-02 18:17:38,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 179. [2023-12-02 18:17:38,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 128 states have (on average 1.4921875) internal successors, (191), 161 states have internal predecessors, (191), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:38,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 218 transitions. [2023-12-02 18:17:38,200 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 218 transitions. Word has length 19 [2023-12-02 18:17:38,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:38,201 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 218 transitions. [2023-12-02 18:17:38,201 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 18:17:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 218 transitions. [2023-12-02 18:17:38,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 18:17:38,202 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:38,202 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:17:38,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 18:17:38,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-02 18:17:38,410 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:38,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:38,410 INFO L85 PathProgramCache]: Analyzing trace with hash -787010080, now seen corresponding path program 1 times [2023-12-02 18:17:38,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:38,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53753055] [2023-12-02 18:17:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:38,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:38,539 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 18:17:38,539 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53753055] [2023-12-02 18:17:38,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53753055] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:38,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364218325] [2023-12-02 18:17:38,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:38,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:38,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:38,541 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:38,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 18:17:38,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:38,833 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:17:38,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:38,849 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 18:17:38,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:17:38,872 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 18:17:38,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364218325] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:17:38,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [109084269] [2023-12-02 18:17:38,875 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 18:17:38,876 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:17:38,876 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:17:38,876 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:17:38,876 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:17:42,262 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 104 for LOIs [2023-12-02 18:17:42,282 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:17:43,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [109084269] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:17:43,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:17:43,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 3, 4] total 16 [2023-12-02 18:17:43,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507065358] [2023-12-02 18:17:43,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:17:43,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 18:17:43,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:17:43,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 18:17:43,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-12-02 18:17:43,890 INFO L87 Difference]: Start difference. First operand 179 states and 218 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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 18:17:46,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:17:46,290 INFO L93 Difference]: Finished difference Result 331 states and 404 transitions. [2023-12-02 18:17:46,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:17:46,291 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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 21 [2023-12-02 18:17:46,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:17:46,292 INFO L225 Difference]: With dead ends: 331 [2023-12-02 18:17:46,292 INFO L226 Difference]: Without dead ends: 179 [2023-12-02 18:17:46,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-12-02 18:17:46,294 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 1 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:17:46,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1182 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 425 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 18:17:46,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-02 18:17:46,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-12-02 18:17:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 128 states have (on average 1.484375) internal successors, (190), 161 states have internal predecessors, (190), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:17:46,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 217 transitions. [2023-12-02 18:17:46,302 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 217 transitions. Word has length 21 [2023-12-02 18:17:46,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:17:46,302 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 217 transitions. [2023-12-02 18:17:46,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 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 18:17:46,302 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 217 transitions. [2023-12-02 18:17:46,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 18:17:46,303 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:17:46,303 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 18:17:46,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 18:17:46,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-02 18:17:46,504 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:17:46,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:17:46,504 INFO L85 PathProgramCache]: Analyzing trace with hash 558122558, now seen corresponding path program 1 times [2023-12-02 18:17:46,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:17:46,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048611859] [2023-12-02 18:17:46,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:46,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:17:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:46,630 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 18:17:46,630 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:17:46,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048611859] [2023-12-02 18:17:46,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048611859] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:17:46,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528510950] [2023-12-02 18:17:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:17:46,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:17:46,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:17:46,632 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:17:46,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 18:17:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:17:46,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:17:46,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:17:46,870 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 18:17:46,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:17:46,889 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 18:17:46,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528510950] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:17:46,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1668964366] [2023-12-02 18:17:46,892 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 18:17:46,893 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:17:46,893 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:17:46,893 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:17:46,893 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:17:58,679 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 104 for LOIs [2023-12-02 18:17:58,702 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:18:00,175 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7055#(<= 2147483647 |ULTIMATE.start_main_~i~5#1|)' at error location [2023-12-02 18:18:00,175 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:18:00,176 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:18:00,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-12-02 18:18:00,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198811082] [2023-12-02 18:18:00,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:18:00,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 18:18:00,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:18:00,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 18:18:00,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-02 18:18:00,177 INFO L87 Difference]: Start difference. First operand 179 states and 217 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 18:18:00,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:18:00,363 INFO L93 Difference]: Finished difference Result 362 states and 440 transitions. [2023-12-02 18:18:00,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:18:00,364 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 18:18:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:18:00,365 INFO L225 Difference]: With dead ends: 362 [2023-12-02 18:18:00,365 INFO L226 Difference]: Without dead ends: 188 [2023-12-02 18:18:00,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-02 18:18:00,366 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 4 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:18:00,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 356 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:18:00,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-12-02 18:18:00,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-12-02 18:18:00,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 137 states have (on average 1.4525547445255473) internal successors, (199), 170 states have internal predecessors, (199), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:18:00,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 226 transitions. [2023-12-02 18:18:00,376 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 226 transitions. Word has length 26 [2023-12-02 18:18:00,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:18:00,376 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 226 transitions. [2023-12-02 18:18:00,376 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 18:18:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 226 transitions. [2023-12-02 18:18:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 18:18:00,377 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:18:00,377 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 18:18:00,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 18:18:00,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:18:00,579 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:18:00,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:18:00,579 INFO L85 PathProgramCache]: Analyzing trace with hash -737304197, now seen corresponding path program 2 times [2023-12-02 18:18:00,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:18:00,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866296126] [2023-12-02 18:18:00,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:18:00,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:18:00,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:18:00,721 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 18:18:00,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:18:00,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866296126] [2023-12-02 18:18:00,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866296126] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:18:00,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725650374] [2023-12-02 18:18:00,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:18:00,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:18:00,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:18:00,723 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:18:00,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 18:18:00,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 18:18:00,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:18:00,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:18:00,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:18:01,017 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 18:18:01,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:18:01,052 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 18:18:01,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725650374] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:18:01,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [713594783] [2023-12-02 18:18:01,055 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 18:18:01,055 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:18:01,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:18:01,056 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:18:01,056 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:18:15,214 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 104 for LOIs [2023-12-02 18:18:15,244 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:18:17,367 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7948#(<= 2147483647 |ULTIMATE.start_main_~i~5#1|)' at error location [2023-12-02 18:18:17,367 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:18:17,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:18:17,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-12-02 18:18:17,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455519481] [2023-12-02 18:18:17,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:18:17,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 18:18:17,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:18:17,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 18:18:17,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=359, Unknown=2, NotChecked=0, Total=420 [2023-12-02 18:18:17,369 INFO L87 Difference]: Start difference. First operand 188 states and 226 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 18:18:18,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:18:18,025 INFO L93 Difference]: Finished difference Result 359 states and 436 transitions. [2023-12-02 18:18:18,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 18:18:18,026 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 18:18:18,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:18:18,027 INFO L225 Difference]: With dead ends: 359 [2023-12-02 18:18:18,027 INFO L226 Difference]: Without dead ends: 197 [2023-12-02 18:18:18,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=93, Invalid=503, Unknown=4, NotChecked=0, Total=600 [2023-12-02 18:18:18,029 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 46 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:18:18,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 932 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:18:18,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2023-12-02 18:18:18,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 184. [2023-12-02 18:18:18,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 134 states have (on average 1.4477611940298507) internal successors, (194), 166 states have internal predecessors, (194), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:18:18,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 221 transitions. [2023-12-02 18:18:18,046 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 221 transitions. Word has length 35 [2023-12-02 18:18:18,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:18:18,047 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 221 transitions. [2023-12-02 18:18:18,047 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 18:18:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 221 transitions. [2023-12-02 18:18:18,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 18:18:18,049 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:18:18,049 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:18:18,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 18:18:18,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 18:18:18,250 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:18:18,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:18:18,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1840118196, now seen corresponding path program 1 times [2023-12-02 18:18:18,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:18:18,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564853214] [2023-12-02 18:18:18,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:18:18,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:18:18,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:18:18,440 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 18:18:18,440 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:18:18,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564853214] [2023-12-02 18:18:18,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564853214] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:18:18,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286621870] [2023-12-02 18:18:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:18:18,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:18:18,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:18:18,442 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:18:18,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 18:18:18,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:18:18,773 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 18:18:18,775 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:18:18,824 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:18:18,824 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:18:18,903 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-12-02 18:18:18,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286621870] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:18:18,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [607527822] [2023-12-02 18:18:18,905 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 18:18:18,906 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:18:18,906 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:18:18,906 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:18:18,906 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:18:34,140 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 104 for LOIs [2023-12-02 18:18:34,163 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:18:39,438 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8875#(and (<= (+ |ULTIMATE.start_main_~i~6#1| 1) |ULTIMATE.start_main_~argc~0#1|) (<= 2147483647 |ULTIMATE.start_main_~i~6#1|) (= |ULTIMATE.start_main_~res~0#1| 1) (= |ULTIMATE.start___main_#res#1| 1) (exists ((|v_#valid_143| (Array Int Int))) (= (store |v_#valid_143| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (+ |ULTIMATE.start_main_~mem_track~0#1.offset| (* |ULTIMATE.start_main_~i~6#1| 8))) 0) |#valid|)))' at error location [2023-12-02 18:18:39,438 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:18:39,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:18:39,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-12-02 18:18:39,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665815724] [2023-12-02 18:18:39,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:18:39,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 18:18:39,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:18:39,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 18:18:39,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 18:18:39,441 INFO L87 Difference]: Start difference. First operand 184 states and 221 transitions. Second operand has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 18:18:39,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:18:39,967 INFO L93 Difference]: Finished difference Result 375 states and 455 transitions. [2023-12-02 18:18:39,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 18:18:39,967 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 18:18:39,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:18:39,969 INFO L225 Difference]: With dead ends: 375 [2023-12-02 18:18:39,969 INFO L226 Difference]: Without dead ends: 205 [2023-12-02 18:18:39,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 407 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2023-12-02 18:18:39,971 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 4 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:18:39,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 694 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:18:39,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-12-02 18:18:39,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-12-02 18:18:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 155 states have (on average 1.3870967741935485) internal successors, (215), 187 states have internal predecessors, (215), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:18:39,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 242 transitions. [2023-12-02 18:18:39,985 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 242 transitions. Word has length 40 [2023-12-02 18:18:39,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:18:39,985 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 242 transitions. [2023-12-02 18:18:39,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.214285714285714) internal successors, (73), 14 states have internal predecessors, (73), 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 18:18:39,985 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 242 transitions. [2023-12-02 18:18:39,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-12-02 18:18:39,986 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:18:39,986 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:18:39,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 18:18:40,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:18:40,187 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:18:40,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:18:40,187 INFO L85 PathProgramCache]: Analyzing trace with hash 345795792, now seen corresponding path program 2 times [2023-12-02 18:18:40,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:18:40,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776340199] [2023-12-02 18:18:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:18:40,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:18:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:18:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 18:18:40,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:18:40,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776340199] [2023-12-02 18:18:40,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776340199] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:18:40,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374363440] [2023-12-02 18:18:40,417 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:18:40,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:18:40,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:18:40,419 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:18:40,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 18:18:40,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 18:18:40,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:18:40,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:18:40,722 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:18:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 18:18:40,760 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:18:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-12-02 18:18:40,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374363440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:18:40,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [436306140] [2023-12-02 18:18:40,802 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2023-12-02 18:18:40,802 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:18:40,802 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:18:40,802 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:18:40,802 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:18:59,666 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 104 for LOIs [2023-12-02 18:18:59,688 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:19:02,350 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9969#(and (<= (+ |ULTIMATE.start_main_~i~6#1| 1) |ULTIMATE.start_main_~argc~0#1|) (<= 2147483647 |ULTIMATE.start_main_~i~6#1|) (= |ULTIMATE.start_main_~res~0#1| 1) (= |ULTIMATE.start___main_#res#1| 1) (exists ((|v_#valid_159| (Array Int Int))) (= (store |v_#valid_159| (select (select |#memory_$Pointer$.base| |ULTIMATE.start_main_~mem_track~0#1.base|) (+ |ULTIMATE.start_main_~mem_track~0#1.offset| (* |ULTIMATE.start_main_~i~6#1| 8))) 0) |#valid|)))' at error location [2023-12-02 18:19:02,350 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:19:02,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:19:02,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-12-02 18:19:02,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126215861] [2023-12-02 18:19:02,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:19:02,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:19:02,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:19:02,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:19:02,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2023-12-02 18:19:02,352 INFO L87 Difference]: Start difference. First operand 205 states and 242 transitions. Second operand has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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 18:19:02,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:02,636 INFO L93 Difference]: Finished difference Result 205 states and 242 transitions. [2023-12-02 18:19:02,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:19:02,637 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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 61 [2023-12-02 18:19:02,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:02,638 INFO L225 Difference]: With dead ends: 205 [2023-12-02 18:19:02,639 INFO L226 Difference]: Without dead ends: 194 [2023-12-02 18:19:02,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2023-12-02 18:19:02,640 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 37 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:02,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 597 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:19:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-12-02 18:19:02,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-12-02 18:19:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 145 states have (on average 1.4) internal successors, (203), 176 states have internal predecessors, (203), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:19:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 230 transitions. [2023-12-02 18:19:02,658 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 230 transitions. Word has length 61 [2023-12-02 18:19:02,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:02,658 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 230 transitions. [2023-12-02 18:19:02,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.0) internal successors, (45), 6 states have internal predecessors, (45), 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 18:19:02,658 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 230 transitions. [2023-12-02 18:19:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 18:19:02,659 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:02,659 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 18:19:02,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 18:19:02,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-02 18:19:02,860 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:19:02,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:02,861 INFO L85 PathProgramCache]: Analyzing trace with hash -499347414, now seen corresponding path program 1 times [2023-12-02 18:19:02,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:19:02,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666830942] [2023-12-02 18:19:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:02,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:19:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:03,102 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 18:19:03,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:19:03,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666830942] [2023-12-02 18:19:03,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666830942] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:19:03,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:19:03,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:19:03,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909600188] [2023-12-02 18:19:03,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:19:03,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:19:03,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:19:03,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:19:03,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:19:03,104 INFO L87 Difference]: Start difference. First operand 194 states and 230 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:19:03,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:03,734 INFO L93 Difference]: Finished difference Result 321 states and 387 transitions. [2023-12-02 18:19:03,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:19:03,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-12-02 18:19:03,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:03,736 INFO L225 Difference]: With dead ends: 321 [2023-12-02 18:19:03,736 INFO L226 Difference]: Without dead ends: 221 [2023-12-02 18:19:03,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:19:03,737 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 46 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:03,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 509 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-02 18:19:03,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-12-02 18:19:03,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 196. [2023-12-02 18:19:03,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 147 states have (on average 1.3945578231292517) internal successors, (205), 178 states have internal predecessors, (205), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:19:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 232 transitions. [2023-12-02 18:19:03,756 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 232 transitions. Word has length 64 [2023-12-02 18:19:03,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:03,756 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 232 transitions. [2023-12-02 18:19:03,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:19:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 232 transitions. [2023-12-02 18:19:03,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 18:19:03,757 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:03,758 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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] [2023-12-02 18:19:03,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 18:19:03,758 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:19:03,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:03,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1009206181, now seen corresponding path program 1 times [2023-12-02 18:19:03,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:19:03,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308736669] [2023-12-02 18:19:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:03,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:19:03,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-02 18:19:04,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:19:04,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308736669] [2023-12-02 18:19:04,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308736669] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:19:04,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:19:04,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:19:04,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009489357] [2023-12-02 18:19:04,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:19:04,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:19:04,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:19:04,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:19:04,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:19:04,149 INFO L87 Difference]: Start difference. First operand 196 states and 232 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:19:04,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:04,400 INFO L93 Difference]: Finished difference Result 290 states and 340 transitions. [2023-12-02 18:19:04,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:19:04,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 68 [2023-12-02 18:19:04,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:04,402 INFO L225 Difference]: With dead ends: 290 [2023-12-02 18:19:04,402 INFO L226 Difference]: Without dead ends: 199 [2023-12-02 18:19:04,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:19:04,403 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 175 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:04,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 340 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:19:04,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-12-02 18:19:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 198. [2023-12-02 18:19:04,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 149 states have (on average 1.389261744966443) internal successors, (207), 180 states have internal predecessors, (207), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:19:04,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 234 transitions. [2023-12-02 18:19:04,420 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 234 transitions. Word has length 68 [2023-12-02 18:19:04,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:04,420 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 234 transitions. [2023-12-02 18:19:04,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:19:04,420 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 234 transitions. [2023-12-02 18:19:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 18:19:04,421 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:04,421 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] [2023-12-02 18:19:04,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-02 18:19:04,421 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:19:04,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:04,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1825436380, now seen corresponding path program 1 times [2023-12-02 18:19:04,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:19:04,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398155888] [2023-12-02 18:19:04,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:04,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:19:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:04,543 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 18:19:04,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:19:04,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398155888] [2023-12-02 18:19:04,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398155888] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:19:04,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:19:04,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:19:04,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016184567] [2023-12-02 18:19:04,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:19:04,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:19:04,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:19:04,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:19:04,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:19:04,545 INFO L87 Difference]: Start difference. First operand 198 states and 234 transitions. Second operand has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:19:04,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:04,811 INFO L93 Difference]: Finished difference Result 210 states and 249 transitions. [2023-12-02 18:19:04,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:19:04,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2023-12-02 18:19:04,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:04,815 INFO L225 Difference]: With dead ends: 210 [2023-12-02 18:19:04,815 INFO L226 Difference]: Without dead ends: 208 [2023-12-02 18:19:04,816 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 18:19:04,816 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 6 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:04,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 344 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:19:04,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-12-02 18:19:04,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 202. [2023-12-02 18:19:04,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 153 states have (on average 1.3856209150326797) internal successors, (212), 184 states have internal predecessors, (212), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:19:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 239 transitions. [2023-12-02 18:19:04,837 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 239 transitions. Word has length 67 [2023-12-02 18:19:04,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:04,837 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 239 transitions. [2023-12-02 18:19:04,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 17.0) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:19:04,838 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 239 transitions. [2023-12-02 18:19:04,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 18:19:04,839 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:04,839 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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 18:19:04,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 18:19:04,840 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:19:04,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:04,840 INFO L85 PathProgramCache]: Analyzing trace with hash 303019583, now seen corresponding path program 1 times [2023-12-02 18:19:04,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:19:04,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449679947] [2023-12-02 18:19:04,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:04,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:19:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:05,041 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-02 18:19:05,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:19:05,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449679947] [2023-12-02 18:19:05,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449679947] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:19:05,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:19:05,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:19:05,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276365583] [2023-12-02 18:19:05,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:19:05,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:19:05,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:19:05,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:19:05,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:19:05,043 INFO L87 Difference]: Start difference. First operand 202 states and 239 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:19:05,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:05,565 INFO L93 Difference]: Finished difference Result 284 states and 330 transitions. [2023-12-02 18:19:05,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:19:05,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2023-12-02 18:19:05,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:05,567 INFO L225 Difference]: With dead ends: 284 [2023-12-02 18:19:05,567 INFO L226 Difference]: Without dead ends: 202 [2023-12-02 18:19:05,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:19:05,569 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 1 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 474 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:05,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 474 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:19:05,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-02 18:19:05,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2023-12-02 18:19:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 153 states have (on average 1.3790849673202614) internal successors, (211), 184 states have internal predecessors, (211), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:19:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 238 transitions. [2023-12-02 18:19:05,588 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 238 transitions. Word has length 69 [2023-12-02 18:19:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:05,589 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 238 transitions. [2023-12-02 18:19:05,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:19:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 238 transitions. [2023-12-02 18:19:05,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-12-02 18:19:05,590 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:05,590 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 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 18:19:05,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-02 18:19:05,590 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:19:05,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:05,591 INFO L85 PathProgramCache]: Analyzing trace with hash 303048545, now seen corresponding path program 1 times [2023-12-02 18:19:05,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:19:05,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486540237] [2023-12-02 18:19:05,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:05,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:19:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:05,774 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-02 18:19:05,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:19:05,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486540237] [2023-12-02 18:19:05,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486540237] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:19:05,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:19:05,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 18:19:05,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008037586] [2023-12-02 18:19:05,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:19:05,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:19:05,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:19:05,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:19:05,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:19:05,776 INFO L87 Difference]: Start difference. First operand 202 states and 238 transitions. Second operand has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:19:06,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:06,147 INFO L93 Difference]: Finished difference Result 211 states and 250 transitions. [2023-12-02 18:19:06,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:19:06,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2023-12-02 18:19:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:06,150 INFO L225 Difference]: With dead ends: 211 [2023-12-02 18:19:06,150 INFO L226 Difference]: Without dead ends: 209 [2023-12-02 18:19:06,151 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 18:19:06,151 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 4 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:06,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 335 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:19:06,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-12-02 18:19:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 206. [2023-12-02 18:19:06,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 157 states have (on average 1.3821656050955413) internal successors, (217), 188 states have internal predecessors, (217), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:19:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 244 transitions. [2023-12-02 18:19:06,171 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 244 transitions. Word has length 69 [2023-12-02 18:19:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:06,171 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 244 transitions. [2023-12-02 18:19:06,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.5) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 18:19:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 244 transitions. [2023-12-02 18:19:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 18:19:06,173 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:06,173 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-12-02 18:19:06,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-02 18:19:06,173 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:19:06,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1665816139, now seen corresponding path program 1 times [2023-12-02 18:19:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:19:06,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926807089] [2023-12-02 18:19:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:06,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:19:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:06,366 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 18:19:06,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:19:06,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926807089] [2023-12-02 18:19:06,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926807089] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:19:06,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528405316] [2023-12-02 18:19:06,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:06,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:19:06,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:19:06,368 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:19:06,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 18:19:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:06,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:19:06,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:19:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-02 18:19:06,834 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:19:06,877 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-02 18:19:06,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528405316] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:19:06,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1220944602] [2023-12-02 18:19:06,880 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 18:19:06,880 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:19:06,880 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:19:06,881 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:19:06,881 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:19:16,896 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 104 for LOIs [2023-12-02 18:19:16,916 INFO L197 IcfgInterpreter]: Interpreting procedure execvp with input of size 193 for LOIs [2023-12-02 18:19:17,300 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:19:26,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1220944602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:19:26,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:19:26,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [3, 5, 5] total 35 [2023-12-02 18:19:26,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538367155] [2023-12-02 18:19:26,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:19:26,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-12-02 18:19:26,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:19:26,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-12-02 18:19:26,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=1078, Unknown=6, NotChecked=0, Total=1190 [2023-12-02 18:19:26,139 INFO L87 Difference]: Start difference. First operand 206 states and 244 transitions. Second operand has 27 states, 23 states have (on average 1.565217391304348) internal successors, (36), 25 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:19:34,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:34,285 INFO L93 Difference]: Finished difference Result 335 states and 400 transitions. [2023-12-02 18:19:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 18:19:34,286 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 23 states have (on average 1.565217391304348) internal successors, (36), 25 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2023-12-02 18:19:34,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:34,288 INFO L225 Difference]: With dead ends: 335 [2023-12-02 18:19:34,288 INFO L226 Difference]: Without dead ends: 228 [2023-12-02 18:19:34,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 172 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=130, Invalid=1346, Unknown=6, NotChecked=0, Total=1482 [2023-12-02 18:19:34,290 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 41 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 1400 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 1406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1400 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:34,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 2250 Invalid, 1406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1400 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2023-12-02 18:19:34,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2023-12-02 18:19:34,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 209. [2023-12-02 18:19:34,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 161 states have (on average 1.3726708074534162) internal successors, (221), 191 states have internal predecessors, (221), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:19:34,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 248 transitions. [2023-12-02 18:19:34,307 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 248 transitions. Word has length 71 [2023-12-02 18:19:34,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:34,307 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 248 transitions. [2023-12-02 18:19:34,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 23 states have (on average 1.565217391304348) internal successors, (36), 25 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:19:34,308 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 248 transitions. [2023-12-02 18:19:34,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 18:19:34,309 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:34,309 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:19:34,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 18:19:34,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:19:34,509 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:19:34,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:34,510 INFO L85 PathProgramCache]: Analyzing trace with hash -461861721, now seen corresponding path program 1 times [2023-12-02 18:19:34,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:19:34,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552934444] [2023-12-02 18:19:34,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:34,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:19:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-02 18:19:34,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:19:34,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552934444] [2023-12-02 18:19:34,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552934444] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:19:34,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:19:34,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 18:19:34,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422166535] [2023-12-02 18:19:34,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:19:34,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 18:19:34,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:19:34,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 18:19:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 18:19:34,664 INFO L87 Difference]: Start difference. First operand 209 states and 248 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:19:35,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:19:35,097 INFO L93 Difference]: Finished difference Result 353 states and 423 transitions. [2023-12-02 18:19:35,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 18:19:35,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 78 [2023-12-02 18:19:35,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:19:35,099 INFO L225 Difference]: With dead ends: 353 [2023-12-02 18:19:35,099 INFO L226 Difference]: Without dead ends: 207 [2023-12-02 18:19:35,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 18:19:35,100 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 3 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:19:35,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 506 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 18:19:35,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2023-12-02 18:19:35,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2023-12-02 18:19:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 159 states have (on average 1.3647798742138364) internal successors, (217), 189 states have internal predecessors, (217), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:19:35,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 244 transitions. [2023-12-02 18:19:35,117 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 244 transitions. Word has length 78 [2023-12-02 18:19:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:19:35,117 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 244 transitions. [2023-12-02 18:19:35,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:19:35,118 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 244 transitions. [2023-12-02 18:19:35,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-12-02 18:19:35,119 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:19:35,119 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:19:35,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-02 18:19:35,119 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:19:35,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:19:35,120 INFO L85 PathProgramCache]: Analyzing trace with hash 226786993, now seen corresponding path program 1 times [2023-12-02 18:19:35,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:19:35,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665472692] [2023-12-02 18:19:35,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:35,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:19:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:35,349 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-02 18:19:35,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:19:35,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665472692] [2023-12-02 18:19:35,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665472692] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:19:35,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166569080] [2023-12-02 18:19:35,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:19:35,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:19:35,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:19:35,351 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:19:35,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 18:19:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:19:35,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:19:35,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:19:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 18:19:35,936 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:19:35,980 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-02 18:19:35,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166569080] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:19:35,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1153256481] [2023-12-02 18:19:35,983 INFO L159 IcfgInterpreter]: Started Sifa with 44 locations of interest [2023-12-02 18:19:35,983 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:19:35,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:19:35,984 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:19:35,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:19:46,918 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-12-02 18:19:46,919 INFO L197 IcfgInterpreter]: Interpreting procedure bb_perror_msg_and_die with input of size 255 for LOIs [2023-12-02 18:19:49,797 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_strcpy with input of size 311 for LOIs [2023-12-02 18:19:50,431 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:20:37,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1153256481] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:20:37,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:20:37,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [5, 5, 5] total 44 [2023-12-02 18:20:37,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491029423] [2023-12-02 18:20:37,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:20:37,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-12-02 18:20:37,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:20:37,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-12-02 18:20:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1746, Unknown=19, NotChecked=0, Total=1892 [2023-12-02 18:20:37,153 INFO L87 Difference]: Start difference. First operand 207 states and 244 transitions. Second operand has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 33 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:20:41,105 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:20:43,668 WARN L539 Checker$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 18:21:10,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:21:10,930 INFO L93 Difference]: Finished difference Result 392 states and 470 transitions. [2023-12-02 18:21:10,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-02 18:21:10,930 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 33 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 78 [2023-12-02 18:21:10,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:21:10,932 INFO L225 Difference]: With dead ends: 392 [2023-12-02 18:21:10,932 INFO L226 Difference]: Without dead ends: 253 [2023-12-02 18:21:10,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 189 SyntacticMatches, 12 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 48.0s TimeCoverageRelationStatistics Valid=146, Invalid=1997, Unknown=19, NotChecked=0, Total=2162 [2023-12-02 18:21:10,934 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 50 mSDsluCounter, 3546 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 5 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 3706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.4s IncrementalHoareTripleChecker+Time [2023-12-02 18:21:10,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3700 Invalid, 3706 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 3685 Invalid, 16 Unknown, 0 Unchecked, 32.4s Time] [2023-12-02 18:21:10,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-12-02 18:21:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 236. [2023-12-02 18:21:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 185 states have (on average 1.372972972972973) internal successors, (254), 215 states have internal predecessors, (254), 17 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2023-12-02 18:21:10,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 286 transitions. [2023-12-02 18:21:10,954 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 286 transitions. Word has length 78 [2023-12-02 18:21:10,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:21:10,954 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 286 transitions. [2023-12-02 18:21:10,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 33 states have internal predecessors, (40), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:21:10,954 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 286 transitions. [2023-12-02 18:21:10,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 18:21:10,955 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:21:10,955 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:21:10,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 18:21:11,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-12-02 18:21:11,156 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:21:11,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:21:11,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1145122499, now seen corresponding path program 1 times [2023-12-02 18:21:11,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:21:11,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215012992] [2023-12-02 18:21:11,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:21:11,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:21:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:21:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-02 18:21:11,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:21:11,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215012992] [2023-12-02 18:21:11,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215012992] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:21:11,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615087038] [2023-12-02 18:21:11,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:21:11,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:21:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:21:11,329 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:21:11,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-02 18:21:11,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:21:11,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:21:11,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:21:11,803 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 18:21:11,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:21:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-02 18:21:11,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615087038] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:21:11,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1136067474] [2023-12-02 18:21:11,849 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2023-12-02 18:21:11,849 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:21:11,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:21:11,850 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:21:11,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:21:24,536 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-12-02 18:21:24,537 INFO L197 IcfgInterpreter]: Interpreting procedure bb_perror_msg_and_die with input of size 255 for LOIs [2023-12-02 18:21:27,240 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_strcpy with input of size 309 for LOIs [2023-12-02 18:21:27,849 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:22:01,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1136067474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:22:01,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:22:01,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [5, 5, 5] total 42 [2023-12-02 18:22:01,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90676814] [2023-12-02 18:22:01,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:22:01,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-12-02 18:22:01,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:22:01,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-12-02 18:22:01,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1579, Unknown=18, NotChecked=0, Total=1722 [2023-12-02 18:22:01,789 INFO L87 Difference]: Start difference. First operand 236 states and 286 transitions. Second operand has 35 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:22:05,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:22:10,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:22:29,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:22:29,264 INFO L93 Difference]: Finished difference Result 284 states and 344 transitions. [2023-12-02 18:22:29,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-12-02 18:22:29,265 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 74 [2023-12-02 18:22:29,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:22:29,267 INFO L225 Difference]: With dead ends: 284 [2023-12-02 18:22:29,267 INFO L226 Difference]: Without dead ends: 282 [2023-12-02 18:22:29,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 188 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 35.0s TimeCoverageRelationStatistics Valid=144, Invalid=1818, Unknown=18, NotChecked=0, Total=1980 [2023-12-02 18:22:29,268 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 49 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 3054 mSolverCounterSat, 3 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3054 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:22:29,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2761 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3054 Invalid, 16 Unknown, 0 Unchecked, 26.3s Time] [2023-12-02 18:22:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-12-02 18:22:29,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 236. [2023-12-02 18:22:29,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 185 states have (on average 1.372972972972973) internal successors, (254), 215 states have internal predecessors, (254), 17 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2023-12-02 18:22:29,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 286 transitions. [2023-12-02 18:22:29,295 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 286 transitions. Word has length 74 [2023-12-02 18:22:29,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:22:29,296 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 286 transitions. [2023-12-02 18:22:29,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 18:22:29,296 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 286 transitions. [2023-12-02 18:22:29,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 18:22:29,297 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:22:29,297 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:22:29,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-02 18:22:29,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-12-02 18:22:29,497 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:22:29,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:22:29,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1680745072, now seen corresponding path program 1 times [2023-12-02 18:22:29,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:22:29,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526255505] [2023-12-02 18:22:29,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:22:29,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:22:29,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:22:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-12-02 18:22:29,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:22:29,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526255505] [2023-12-02 18:22:29,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526255505] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:22:29,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:22:29,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:22:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468622942] [2023-12-02 18:22:29,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:22:29,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:22:29,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:22:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:22:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:22:29,661 INFO L87 Difference]: Start difference. First operand 236 states and 286 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:22:29,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:22:29,983 INFO L93 Difference]: Finished difference Result 323 states and 384 transitions. [2023-12-02 18:22:29,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:22:29,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2023-12-02 18:22:29,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:22:29,985 INFO L225 Difference]: With dead ends: 323 [2023-12-02 18:22:29,985 INFO L226 Difference]: Without dead ends: 239 [2023-12-02 18:22:29,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:22:29,986 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 5 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:22:29,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 332 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 18:22:29,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-12-02 18:22:30,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2023-12-02 18:22:30,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 185 states have (on average 1.3675675675675676) internal successors, (253), 215 states have internal predecessors, (253), 17 states have call successors, (17), 7 states have call predecessors, (17), 5 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2023-12-02 18:22:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 285 transitions. [2023-12-02 18:22:30,013 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 285 transitions. Word has length 74 [2023-12-02 18:22:30,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:22:30,013 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 285 transitions. [2023-12-02 18:22:30,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 18:22:30,014 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 285 transitions. [2023-12-02 18:22:30,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-12-02 18:22:30,014 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:22:30,014 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 18:22:30,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-02 18:22:30,015 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:22:30,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:22:30,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1254096614, now seen corresponding path program 1 times [2023-12-02 18:22:30,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:22:30,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346652478] [2023-12-02 18:22:30,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:22:30,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:22:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:22:30,168 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-12-02 18:22:30,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:22:30,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346652478] [2023-12-02 18:22:30,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346652478] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:22:30,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701649146] [2023-12-02 18:22:30,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:22:30,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:22:30,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:22:30,170 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:22:30,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-12-02 18:22:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:22:30,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:22:30,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:22:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-12-02 18:22:30,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:22:30,651 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 18:22:30,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701649146] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:22:30,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [777133246] [2023-12-02 18:22:30,653 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 18:22:30,653 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:22:30,653 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:22:30,654 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:22:30,654 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:22:41,294 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-12-02 18:22:41,295 INFO L197 IcfgInterpreter]: Interpreting procedure bb_perror_msg_and_die with input of size 255 for LOIs [2023-12-02 18:22:44,617 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:23:03,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [777133246] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:23:03,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:23:03,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [3, 5, 5] total 37 [2023-12-02 18:23:03,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319245929] [2023-12-02 18:23:03,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:23:03,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-12-02 18:23:03,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:23:03,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-12-02 18:23:03,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1215, Unknown=15, NotChecked=0, Total=1332 [2023-12-02 18:23:03,007 INFO L87 Difference]: Start difference. First operand 236 states and 285 transitions. Second operand has 29 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:23:06,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:23:09,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 18:23:29,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:23:29,491 INFO L93 Difference]: Finished difference Result 341 states and 407 transitions. [2023-12-02 18:23:29,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-12-02 18:23:29,492 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 73 [2023-12-02 18:23:29,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:23:29,494 INFO L225 Difference]: With dead ends: 341 [2023-12-02 18:23:29,494 INFO L226 Difference]: Without dead ends: 256 [2023-12-02 18:23:29,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=121, Invalid=1424, Unknown=15, NotChecked=0, Total=1560 [2023-12-02 18:23:29,495 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 26 mSDsluCounter, 2583 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 4 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 2026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:23:29,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2726 Invalid, 2026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2010 Invalid, 12 Unknown, 0 Unchecked, 25.6s Time] [2023-12-02 18:23:29,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-12-02 18:23:29,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 251. [2023-12-02 18:23:29,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 200 states have (on average 1.37) internal successors, (274), 229 states have internal predecessors, (274), 17 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2023-12-02 18:23:29,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 306 transitions. [2023-12-02 18:23:29,526 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 306 transitions. Word has length 73 [2023-12-02 18:23:29,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:23:29,526 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 306 transitions. [2023-12-02 18:23:29,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 18:23:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 306 transitions. [2023-12-02 18:23:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-12-02 18:23:29,527 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:23:29,527 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] [2023-12-02 18:23:29,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-12-02 18:23:29,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-12-02 18:23:29,728 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:23:29,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:23:29,728 INFO L85 PathProgramCache]: Analyzing trace with hash -100692713, now seen corresponding path program 1 times [2023-12-02 18:23:29,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:23:29,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661369743] [2023-12-02 18:23:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:23:29,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:23:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:23:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 18:23:29,898 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:23:29,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661369743] [2023-12-02 18:23:29,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661369743] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:23:29,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264594995] [2023-12-02 18:23:29,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:23:29,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:23:29,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:23:29,900 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:23:29,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 18:23:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:23:30,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:23:30,291 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:23:30,458 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-12-02 18:23:30,458 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:23:30,672 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-12-02 18:23:30,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264594995] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:23:30,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1738788367] [2023-12-02 18:23:30,674 INFO L159 IcfgInterpreter]: Started Sifa with 36 locations of interest [2023-12-02 18:23:30,674 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:23:30,674 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:23:30,675 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:23:30,675 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:23:40,580 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 104 for LOIs [2023-12-02 18:23:40,603 INFO L197 IcfgInterpreter]: Interpreting procedure execvp with input of size 193 for LOIs [2023-12-02 18:23:40,969 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:23:57,805 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '19846#(<= 2147483647 execvp_~i~0)' at error location [2023-12-02 18:23:57,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:23:57,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:23:57,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 10 [2023-12-02 18:23:57,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021748717] [2023-12-02 18:23:57,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:23:57,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-02 18:23:57,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:23:57,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-02 18:23:57,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1145, Unknown=6, NotChecked=0, Total=1260 [2023-12-02 18:23:57,808 INFO L87 Difference]: Start difference. First operand 251 states and 306 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:23:59,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:23:59,170 INFO L93 Difference]: Finished difference Result 490 states and 609 transitions. [2023-12-02 18:23:59,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 18:23:59,170 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2023-12-02 18:23:59,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:23:59,172 INFO L225 Difference]: With dead ends: 490 [2023-12-02 18:23:59,172 INFO L226 Difference]: Without dead ends: 279 [2023-12-02 18:23:59,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 173 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=109, Invalid=1145, Unknown=6, NotChecked=0, Total=1260 [2023-12-02 18:23:59,174 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 14 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:23:59,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 988 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 18:23:59,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-02 18:23:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 267. [2023-12-02 18:23:59,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 216 states have (on average 1.3472222222222223) internal successors, (291), 245 states have internal predecessors, (291), 17 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2023-12-02 18:23:59,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 323 transitions. [2023-12-02 18:23:59,208 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 323 transitions. Word has length 72 [2023-12-02 18:23:59,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:23:59,208 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 323 transitions. [2023-12-02 18:23:59,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:23:59,208 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 323 transitions. [2023-12-02 18:23:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-12-02 18:23:59,209 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:23:59,209 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, 1] [2023-12-02 18:23:59,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-02 18:23:59,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-12-02 18:23:59,409 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting bb_perror_msg_and_dieErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:23:59,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:23:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash 521895500, now seen corresponding path program 1 times [2023-12-02 18:23:59,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:23:59,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583559412] [2023-12-02 18:23:59,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:23:59,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:23:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:23:59,910 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 18:23:59,910 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:23:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583559412] [2023-12-02 18:23:59,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583559412] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:23:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226098464] [2023-12-02 18:23:59,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:23:59,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:23:59,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:23:59,912 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:23:59,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-12-02 18:24:00,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:24:00,332 INFO L262 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:24:00,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:24:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 3 proven. 51 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 18:24:00,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:24:00,999 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 18:24:00,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226098464] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:24:00,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [269207843] [2023-12-02 18:24:01,001 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 18:24:01,001 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:24:01,002 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:24:01,002 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:24:01,002 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:24:12,041 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-12-02 18:24:12,045 INFO L197 IcfgInterpreter]: Interpreting procedure bb_perror_msg_and_die with input of size 255 for LOIs [2023-12-02 18:24:14,786 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_strcpy with input of size 311 for LOIs [2023-12-02 18:24:15,446 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:25:16,205 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '21327#(and (= (mod (+ 2 |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$1~0#1|) 4294967296) |bb_perror_msg_and_die_bb_verror_msg_~applet_len~0#1|) (<= |bb_perror_msg_and_die_vasprintf_#res#1| 2147483647) (= |bb_perror_msg_and_die_#varArgs#1.offset| 0) (= |bb_perror_msg_and_die_bb_verror_msg_~used~0#1| |bb_perror_msg_and_die_vasprintf_#res#1|) (or (and (= |bb_perror_msg_and_die_bb_verror_msg_~strerr#1.offset| 0) (= |bb_perror_msg_and_die_bb_verror_msg_~strerr#1.base| 0) (= |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| 0)) (and (= |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$2~0#1|) (or (not (= |bb_perror_msg_and_die_bb_verror_msg_~strerr#1.offset| 0)) (not (= |bb_perror_msg_and_die_bb_verror_msg_~strerr#1.base| 0))))) (= |bb_perror_msg_and_die_#in~s#1.offset| 0) (= |bb_perror_msg_and_die_~s#1.base| 9) (= |bb_perror_msg_and_die_bb_verror_msg_~p#1.offset| 0) (<= (mod (+ 2 |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$1~0#1|) 4294967296) 2147483647) (= |bb_perror_msg_and_die_bb_verror_msg_#in~s#1.base| 9) (= |bb_perror_msg_and_die_~p~0#1.offset| 0) (= (select (select |#memory_$Pointer$.offset| |bb_perror_msg_and_die_bb_verror_msg_~#msg~0#1.base|) 0) |bb_perror_msg_and_die_bb_verror_msg_#t~mem95#1.offset|) (= |bb_perror_msg_and_die_~s#1.offset| 0) (= 0 |bb_perror_msg_and_die_bb_verror_msg_#in~s#1.offset|) (= |bb_perror_msg_and_die_bb_verror_msg_~#msg~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |bb_perror_msg_and_die_bb_verror_msg_~#msg~0#1.base|) 0) |bb_perror_msg_and_die_bb_verror_msg_#t~mem95#1.base|) (<= 2147483648 (+ |bb_perror_msg_and_die_bb_verror_msg_~used~0#1| |bb_perror_msg_and_die_bb_verror_msg_~applet_len~0#1|)) (= 9 |bb_perror_msg_and_die_bb_verror_msg_~s#1.base|) (or (and (= (mod |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| 4294967296) |bb_perror_msg_and_die_bb_verror_msg_~strerr_len~0#1|) (<= (mod |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| 4294967296) 2147483647)) (and (= (mod |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| 4294967296) (+ |bb_perror_msg_and_die_bb_verror_msg_~strerr_len~0#1| 4294967296)) (<= 2147483648 (mod |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| 4294967296)))) (= |bb_perror_msg_and_die_bb_verror_msg_~s#1.offset| 0) (= |bb_perror_msg_and_die_bb_verror_msg_#in~p#1.offset| 0) (= 9 |bb_perror_msg_and_die_#in~s#1.base|) (or (and (= (+ |bb_perror_msg_and_die_bb_verror_msg_~msgeol_len~0#1| 4294967296) (mod |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$4~0#1| 4294967296)) (<= 2147483648 (mod |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$4~0#1| 4294967296))) (and (= |bb_perror_msg_and_die_bb_verror_msg_~msgeol_len~0#1| (mod |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$4~0#1| 4294967296)) (<= (mod |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$4~0#1| 4294967296) 2147483647))))' at error location [2023-12-02 18:25:16,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:25:16,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:25:16,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2023-12-02 18:25:16,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791186371] [2023-12-02 18:25:16,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:25:16,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-02 18:25:16,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:25:16,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-02 18:25:16,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1965, Unknown=23, NotChecked=0, Total=2162 [2023-12-02 18:25:16,208 INFO L87 Difference]: Start difference. First operand 267 states and 323 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 18:25:16,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:25:16,772 INFO L93 Difference]: Finished difference Result 506 states and 621 transitions. [2023-12-02 18:25:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:25:16,773 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2023-12-02 18:25:16,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:25:16,775 INFO L225 Difference]: With dead ends: 506 [2023-12-02 18:25:16,775 INFO L226 Difference]: Without dead ends: 279 [2023-12-02 18:25:16,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 218 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 61.3s TimeCoverageRelationStatistics Valid=174, Invalid=1965, Unknown=23, NotChecked=0, Total=2162 [2023-12-02 18:25:16,778 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:25:16,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 337 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:25:16,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2023-12-02 18:25:16,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2023-12-02 18:25:16,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 228 states have (on average 1.3289473684210527) internal successors, (303), 257 states have internal predecessors, (303), 17 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2023-12-02 18:25:16,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 335 transitions. [2023-12-02 18:25:16,831 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 335 transitions. Word has length 87 [2023-12-02 18:25:16,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:25:16,832 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 335 transitions. [2023-12-02 18:25:16,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 13 states have internal predecessors, (72), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-12-02 18:25:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 335 transitions. [2023-12-02 18:25:16,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-12-02 18:25:16,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:25:16,833 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:25:16,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-12-02 18:25:17,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:25:17,033 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting bb_perror_msg_and_dieErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:25:17,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:25:17,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1730493044, now seen corresponding path program 2 times [2023-12-02 18:25:17,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:25:17,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657389831] [2023-12-02 18:25:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:25:17,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:25:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:25:27,031 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2023-12-02 18:25:27,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:25:27,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657389831] [2023-12-02 18:25:27,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657389831] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 18:25:27,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106481205] [2023-12-02 18:25:27,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 18:25:27,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:25:27,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:25:27,033 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:25:27,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-12-02 18:27:58,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2023-12-02 18:27:58,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 18:27:58,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 70 conjunts are in the unsatisfiable core [2023-12-02 18:27:58,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:27:58,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 18:27:59,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 18:27:59,188 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-02 18:27:59,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-12-02 18:27:59,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-12-02 18:27:59,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:27:59,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:27:59,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 62 [2023-12-02 18:27:59,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:27:59,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 43 [2023-12-02 18:27:59,685 INFO L349 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2023-12-02 18:27:59,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 71 [2023-12-02 18:27:59,742 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-12-02 18:27:59,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-12-02 18:27:59,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 20 [2023-12-02 18:27:59,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:27:59,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:27:59,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 56 [2023-12-02 18:27:59,941 INFO L349 Elim1Store]: treesize reduction 27, result has 15.6 percent of original size [2023-12-02 18:27:59,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 84 treesize of output 69 [2023-12-02 18:27:59,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 18:27:59,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2023-12-02 18:27:59,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:00,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-12-02 18:28:00,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-12-02 18:28:00,452 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:28:00,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 18:28:00,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:00,741 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:28:00,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 18:28:00,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:01,027 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:28:01,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 18:28:01,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:01,317 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:28:01,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 18:28:01,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:01,584 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:28:01,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 18:28:01,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:01,909 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:28:01,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 18:28:01,932 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:02,200 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:28:02,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 18:28:02,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:02,505 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:28:02,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 18:28:02,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:02,771 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:28:02,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 18:28:02,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:03,077 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 18:28:03,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 47 [2023-12-02 18:28:03,111 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 20 [2023-12-02 18:28:03,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 7 [2023-12-02 18:28:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2023-12-02 18:28:04,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:28:05,335 WARN L854 $PredicateComparison]: unable to prove that (or (< (+ |c_ULTIMATE.start_main_~i~5#1| 1) |c_ULTIMATE.start_main_~argc~0#1|) (= c_~logmode~0 0) (let ((.cse1 (+ (* |c_ULTIMATE.start_main_~i~5#1| 8) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1)) (.cse2 (+ 8 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_4810 (Array Int Int)) (v_ArrVal_4811 (Array Int Int)) (v_ArrVal_4813 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_4811) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_4810) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_4813) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_4810 (Array Int Int)) (v_ArrVal_4812 (Array Int Int))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_4810))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse1) v_ArrVal_4812)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse2) 0)))))) is different from false [2023-12-02 18:28:08,392 WARN L854 $PredicateComparison]: unable to prove that (or (< (+ |c_ULTIMATE.start_main_~i~5#1| 1) |c_ULTIMATE.start_main_~argc~0#1|) (let ((.cse4 (+ (* |c_ULTIMATE.start_main_~i~5#1| 8) |c_ULTIMATE.start_main_~argv~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4)) (.cse6 (+ 8 |c_ULTIMATE.start_main_~argv~0#1.offset|))) (and (forall ((v_ArrVal_4808 (Array Int Int)) (v_ArrVal_4809 (Array Int Int)) (v_ArrVal_4810 (Array Int Int)) (v_ArrVal_4800 (Array Int Int)) (v_ArrVal_4811 (Array Int Int)) (v_ArrVal_4801 (Array Int Int)) (v_ArrVal_4813 (Array Int Int))) (= (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_4800))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_4808))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_4801) .cse1 v_ArrVal_4809) .cse2 v_ArrVal_4811) (select (select (store .cse3 .cse2 v_ArrVal_4810) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_4813))))) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6) 0)) (forall ((v_ArrVal_4808 (Array Int Int)) (v_ArrVal_4810 (Array Int Int)) (v_ArrVal_4800 (Array Int Int)) (v_ArrVal_4812 (Array Int Int))) (= (select (select (let ((.cse7 (let ((.cse8 (let ((.cse9 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_4800))) (store .cse9 (select (select .cse9 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_4808)))) (store .cse8 (select (select .cse8 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_4810)))) (store .cse7 (select (select .cse7 |c_ULTIMATE.start_main_~argv~0#1.base|) .cse4) v_ArrVal_4812)) |c_ULTIMATE.start_main_~argv~0#1.base|) .cse6) 0))))) (= c_~logmode~0 0)) is different from false [2023-12-02 18:28:11,907 INFO L349 Elim1Store]: treesize reduction 88, result has 46.7 percent of original size [2023-12-02 18:28:11,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 711 treesize of output 292 [2023-12-02 18:28:11,965 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:28:11,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 273 treesize of output 279 [2023-12-02 18:28:12,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 991709 treesize of output 988627 [2023-12-02 18:28:12,448 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-12-02 18:28:12,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 701516 treesize of output 683863 [2023-12-02 18:28:13,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2072 treesize of output 1982 [2023-12-02 18:28:13,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1982 treesize of output 1918 [2023-12-02 18:28:13,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1918 treesize of output 1838 [2023-12-02 18:28:13,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1838 treesize of output 1774 [2023-12-02 18:28:13,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1774 treesize of output 1766 [2023-12-02 18:28:13,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1766 treesize of output 1762 [2023-12-02 18:28:13,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1762 treesize of output 1746 [2023-12-02 18:28:13,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1746 treesize of output 1714 [2023-12-02 18:28:13,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1714 treesize of output 1696 [2023-12-02 18:28:13,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1696 treesize of output 1680 [2023-12-02 18:28:13,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1680 treesize of output 1660 [2023-12-02 18:28:13,816 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 1660 treesize of output 1640 [2023-12-02 18:28:15,126 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:28:15,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 11 [2023-12-02 18:28:15,274 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 18:28:15,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 118 [2023-12-02 18:28:16,356 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 6 proven. 23 refuted. 42 times theorem prover too weak. 169 trivial. 53 not checked. [2023-12-02 18:28:16,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106481205] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:28:16,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1649595974] [2023-12-02 18:28:16,358 INFO L159 IcfgInterpreter]: Started Sifa with 41 locations of interest [2023-12-02 18:28:16,358 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 18:28:16,359 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 18:28:16,359 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 18:28:16,359 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 18:28:27,369 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 54 for LOIs [2023-12-02 18:28:27,378 INFO L197 IcfgInterpreter]: Interpreting procedure bb_perror_msg_and_die with input of size 160 for LOIs [2023-12-02 18:28:28,802 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_strcpy with input of size 207 for LOIs [2023-12-02 18:28:29,016 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 18:29:25,372 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22948#(and (= (mod (+ 2 |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$1~0#1|) 4294967296) |bb_perror_msg_and_die_bb_verror_msg_~applet_len~0#1|) (<= |bb_perror_msg_and_die_vasprintf_#res#1| 2147483647) (= |bb_perror_msg_and_die_#varArgs#1.offset| 0) (= ~xfunc_error_retval~0 1) (<= 1 |#StackHeapBarrier|) (= |~#bb_errno_location~0.offset| 0) (= ~optind~0 1) (= ~bb_errno~0.base 18) (= |bb_perror_msg_and_die_bb_verror_msg_~used~0#1| |bb_perror_msg_and_die_vasprintf_#res#1|) (= |~#bb_default_login_shell~0.offset| 0) (= 19 |~#die_jmp~0.base|) (= |~#p~1.offset| 0) (or (and (= |bb_perror_msg_and_die_bb_verror_msg_~strerr#1.offset| 0) (= |bb_perror_msg_and_die_bb_verror_msg_~strerr#1.base| 0) (= |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| 0)) (and (= |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$2~0#1|) (or (not (= |bb_perror_msg_and_die_bb_verror_msg_~strerr#1.offset| 0)) (not (= |bb_perror_msg_and_die_bb_verror_msg_~strerr#1.base| 0))))) (= ~msg_eol~0.base 3) (= |bb_perror_msg_and_die_#in~s#1.offset| 0) (= |bb_perror_msg_and_die_~s#1.base| 9) (= |bb_perror_msg_and_die_bb_verror_msg_~p#1.offset| 0) (<= (mod (+ 2 |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$1~0#1|) 4294967296) 2147483647) (= |bb_perror_msg_and_die_bb_verror_msg_#in~s#1.base| 9) (= |bb_perror_msg_and_die_~p~0#1.offset| 0) (= ~msg_eol~0.offset 0) (= (select (select |#memory_$Pointer$.offset| |bb_perror_msg_and_die_bb_verror_msg_~#msg~0#1.base|) 0) |bb_perror_msg_and_die_bb_verror_msg_#t~mem95#1.offset|) (= ~applet_name~0.offset 0) (= |~#bb_errno_location~0.base| 18) (= 16 |~#bb_busybox_exec_path~0.base|) (= |~#bb_busybox_exec_path~0.offset| 0) (= ~logmode~0 1) (= |bb_perror_msg_and_die_~s#1.offset| 0) (= 0 |bb_perror_msg_and_die_bb_verror_msg_#in~s#1.offset|) (= |bb_perror_msg_and_die_bb_verror_msg_~#msg~0#1.offset| 0) (= (select (select |#memory_$Pointer$.base| |bb_perror_msg_and_die_bb_verror_msg_~#msg~0#1.base|) 0) |bb_perror_msg_and_die_bb_verror_msg_#t~mem95#1.base|) (= ~bb_errno~0.offset 0) (= 20 |~#p~1.base|) (= |~#dummy_utmp~0.offset| 0) (<= 2147483648 (+ |bb_perror_msg_and_die_bb_verror_msg_~used~0#1| |bb_perror_msg_and_die_bb_verror_msg_~applet_len~0#1|)) (= 21 |~#dummy_utmp~0.base|) (= 9 |bb_perror_msg_and_die_bb_verror_msg_~s#1.base|) (= |~#die_jmp~0.offset| 0) (or (and (= (mod |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| 4294967296) |bb_perror_msg_and_die_bb_verror_msg_~strerr_len~0#1|) (<= (mod |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| 4294967296) 2147483647)) (and (= (mod |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| 4294967296) (+ |bb_perror_msg_and_die_bb_verror_msg_~strerr_len~0#1| 4294967296)) (<= 2147483648 (mod |bb_perror_msg_and_die_bb_verror_msg_~tmp_if_expr$3~0#1| 4294967296)))) (= |bb_perror_msg_and_die_bb_verror_msg_~s#1.offset| 0) (= |~#bb_default_login_shell~0.base| 17) (= |bb_perror_msg_and_die_bb_verror_msg_#in~p#1.offset| 0) (= ~die_sleep~0 0) (<= 2 |bb_perror_msg_and_die_bb_verror_msg_~#msg~0#1.base|) (= 9 |bb_perror_msg_and_die_#in~s#1.base|) (or (and (= (+ |bb_perror_msg_and_die_bb_verror_msg_~msgeol_len~0#1| 4294967296) (mod |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$4~0#1| 4294967296)) (<= 2147483648 (mod |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$4~0#1| 4294967296))) (and (= |bb_perror_msg_and_die_bb_verror_msg_~msgeol_len~0#1| (mod |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$4~0#1| 4294967296)) (<= (mod |bb_perror_msg_and_die_bb_verror_msg_~return_value_strlen$4~0#1| 4294967296) 2147483647))))' at error location [2023-12-02 18:29:25,372 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 18:29:25,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 18:29:25,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 7, 14] total 34 [2023-12-02 18:29:25,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728034743] [2023-12-02 18:29:25,373 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 18:29:25,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-12-02 18:29:25,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:29:25,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-12-02 18:29:25,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=4172, Unknown=26, NotChecked=266, Total=4830 [2023-12-02 18:29:25,376 INFO L87 Difference]: Start difference. First operand 279 states and 335 transitions. Second operand has 34 states, 34 states have (on average 3.7058823529411766) internal successors, (126), 34 states have internal predecessors, (126), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 18:29:38,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:29:38,603 INFO L93 Difference]: Finished difference Result 518 states and 629 transitions. [2023-12-02 18:29:38,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 18:29:38,604 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.7058823529411766) internal successors, (126), 34 states have internal predecessors, (126), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 99 [2023-12-02 18:29:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:29:38,606 INFO L225 Difference]: With dead ends: 518 [2023-12-02 18:29:38,606 INFO L226 Difference]: Without dead ends: 313 [2023-12-02 18:29:38,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 248 SyntacticMatches, 8 SemanticMatches, 83 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1866 ImplicationChecksByTransitivity, 70.7s TimeCoverageRelationStatistics Valid=673, Invalid=6115, Unknown=26, NotChecked=326, Total=7140 [2023-12-02 18:29:38,610 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 340 mSDsluCounter, 1317 mSDsCounter, 0 mSdLazyCounter, 1244 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:29:38,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1476 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1244 Invalid, 0 Unknown, 402 Unchecked, 8.5s Time] [2023-12-02 18:29:38,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-12-02 18:29:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2023-12-02 18:29:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 262 states have (on average 1.2900763358778626) internal successors, (338), 291 states have internal predecessors, (338), 17 states have call successors, (17), 8 states have call predecessors, (17), 5 states have return successors, (15), 13 states have call predecessors, (15), 14 states have call successors, (15) [2023-12-02 18:29:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 370 transitions. [2023-12-02 18:29:38,649 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 370 transitions. Word has length 99 [2023-12-02 18:29:38,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:29:38,649 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 370 transitions. [2023-12-02 18:29:38,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.7058823529411766) internal successors, (126), 34 states have internal predecessors, (126), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-12-02 18:29:38,649 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 370 transitions. [2023-12-02 18:29:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-12-02 18:29:38,650 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:29:38,650 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 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, 1, 1, 1, 1] [2023-12-02 18:29:38,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-12-02 18:29:38,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:29:38,851 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting bb_perror_msg_and_dieErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:29:38,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:29:38,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2034046045, now seen corresponding path program 3 times [2023-12-02 18:29:38,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:29:38,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125058838] [2023-12-02 18:29:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:29:38,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:29:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:29:39,435 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 18:29:40,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 18:29:40,462 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 18:29:40,462 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 18:29:40,463 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location bb_perror_msg_and_dieErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 42 remaining) [2023-12-02 18:29:40,464 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location execvpErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 42 remaining) [2023-12-02 18:29:40,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location execvpErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 42 remaining) [2023-12-02 18:29:40,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 42 remaining) [2023-12-02 18:29:40,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 42 remaining) [2023-12-02 18:29:40,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 42 remaining) [2023-12-02 18:29:40,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 42 remaining) [2023-12-02 18:29:40,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 42 remaining) [2023-12-02 18:29:40,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 42 remaining) [2023-12-02 18:29:40,465 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 42 remaining) [2023-12-02 18:29:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 42 remaining) [2023-12-02 18:29:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 42 remaining) [2023-12-02 18:29:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 42 remaining) [2023-12-02 18:29:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 42 remaining) [2023-12-02 18:29:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 42 remaining) [2023-12-02 18:29:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 42 remaining) [2023-12-02 18:29:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 42 remaining) [2023-12-02 18:29:40,466 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 42 remaining) [2023-12-02 18:29:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr16ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 42 remaining) [2023-12-02 18:29:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr17ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 42 remaining) [2023-12-02 18:29:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr18ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 42 remaining) [2023-12-02 18:29:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr19ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 42 remaining) [2023-12-02 18:29:40,467 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr20ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 42 remaining) [2023-12-02 18:29:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr21ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 42 remaining) [2023-12-02 18:29:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr22ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 42 remaining) [2023-12-02 18:29:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr23ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 42 remaining) [2023-12-02 18:29:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr24ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 42 remaining) [2023-12-02 18:29:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr25ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 42 remaining) [2023-12-02 18:29:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr26ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 42 remaining) [2023-12-02 18:29:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location bb_perror_msg_and_dieErr27ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 42 remaining) [2023-12-02 18:29:40,468 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 42 remaining) [2023-12-02 18:29:40,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 42 remaining) [2023-12-02 18:29:40,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 42 remaining) [2023-12-02 18:29:40,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 42 remaining) [2023-12-02 18:29:40,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 42 remaining) [2023-12-02 18:29:40,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 42 remaining) [2023-12-02 18:29:40,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 42 remaining) [2023-12-02 18:29:40,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 42 remaining) [2023-12-02 18:29:40,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 42 remaining) [2023-12-02 18:29:40,469 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 42 remaining) [2023-12-02 18:29:40,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 42 remaining) [2023-12-02 18:29:40,470 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 42 remaining) [2023-12-02 18:29:40,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-02 18:29:40,473 INFO L445 BasicCegarLoop]: Path program histogram: [3, 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] [2023-12-02 18:29:40,476 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 18:29:40,542 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-12-02 18:29:40,550 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-12-02 18:29:40,555 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-12-02 18:29:40,555 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-12-02 18:29:40,556 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem118 [2023-12-02 18:29:40,556 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem151 could not be translated [2023-12-02 18:29:40,557 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem151 could not be translated [2023-12-02 18:29:40,558 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not [2023-12-02 18:29:40,559 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem203 [2023-12-02 18:29:40,559 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~strcpy~res204 [2023-12-02 18:29:40,559 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem203 [2023-12-02 18:29:40,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem95 [2023-12-02 18:29:40,560 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem95 [2023-12-02 18:29:40,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:29:40 BoogieIcfgContainer [2023-12-02 18:29:40,584 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 18:29:40,584 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 18:29:40,585 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 18:29:40,585 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 18:29:40,585 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:17:20" (3/4) ... [2023-12-02 18:29:40,587 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 18:29:40,588 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 18:29:40,588 INFO L158 Benchmark]: Toolchain (without parser) took 743775.75ms. Allocated memory was 132.1MB in the beginning and 916.5MB in the end (delta: 784.3MB). Free memory was 82.3MB in the beginning and 762.7MB in the end (delta: -680.4MB). Peak memory consumption was 106.4MB. Max. memory is 16.1GB. [2023-12-02 18:29:40,589 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 132.1MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:29:40,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1631.52ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 82.1MB in the beginning and 75.0MB in the end (delta: 7.0MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2023-12-02 18:29:40,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 116.02ms. Allocated memory is still 165.7MB. Free memory was 75.0MB in the beginning and 67.9MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-12-02 18:29:40,590 INFO L158 Benchmark]: Boogie Preprocessor took 107.44ms. Allocated memory is still 165.7MB. Free memory was 67.9MB in the beginning and 122.7MB in the end (delta: -54.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-12-02 18:29:40,590 INFO L158 Benchmark]: RCFGBuilder took 1357.40ms. Allocated memory is still 165.7MB. Free memory was 122.7MB in the beginning and 92.8MB in the end (delta: 30.0MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. [2023-12-02 18:29:40,590 INFO L158 Benchmark]: TraceAbstraction took 740553.58ms. Allocated memory was 165.7MB in the beginning and 916.5MB in the end (delta: 750.8MB). Free memory was 91.7MB in the beginning and 763.3MB in the end (delta: -671.6MB). Peak memory consumption was 602.3MB. Max. memory is 16.1GB. [2023-12-02 18:29:40,591 INFO L158 Benchmark]: Witness Printer took 3.57ms. Allocated memory is still 916.5MB. Free memory was 763.3MB in the beginning and 762.7MB in the end (delta: 625.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 18:29:40,592 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 132.1MB. Free memory is still 106.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1631.52ms. Allocated memory was 132.1MB in the beginning and 165.7MB in the end (delta: 33.6MB). Free memory was 82.1MB in the beginning and 75.0MB in the end (delta: 7.0MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 116.02ms. Allocated memory is still 165.7MB. Free memory was 75.0MB in the beginning and 67.9MB in the end (delta: 7.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 107.44ms. Allocated memory is still 165.7MB. Free memory was 67.9MB in the beginning and 122.7MB in the end (delta: -54.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1357.40ms. Allocated memory is still 165.7MB. Free memory was 122.7MB in the beginning and 92.8MB in the end (delta: 30.0MB). Peak memory consumption was 67.6MB. Max. memory is 16.1GB. * TraceAbstraction took 740553.58ms. Allocated memory was 165.7MB in the beginning and 916.5MB in the end (delta: 750.8MB). Free memory was 91.7MB in the beginning and 763.3MB in the end (delta: -671.6MB). Peak memory consumption was 602.3MB. Max. memory is 16.1GB. * Witness Printer took 3.57ms. Allocated memory is still 916.5MB. Free memory was 763.3MB in the beginning and 762.7MB in the end (delta: 625.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem118 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem151 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem151 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Expected StepInfo for loop construct to contain Condition, but it did not - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem203 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~strcpy~res204 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem203 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem95 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem95 - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 2359]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of large string literal at line 2500, overapproximation of strlen at line 2343. Possible FailurePath: [L2276] static const char *applet_name; [L2277] static const char bb_busybox_exec_path[15l] = { (const char)47, (const char)112, (const char)114, (const char)111, (const char)99, (const char)47, (const char)115, (const char)101, (const char)108, (const char)102, (const char)47, (const char)101, (const char)120, (const char)101, (const char)0 }; [L2278] static const char bb_default_login_shell[9l] = { (const char)45, (const char)47, (const char)98, (const char)105, (const char)110, (const char)47, (const char)115, (const char)104, (const char)0 }; [L2279] static signed int bb_errno_location; [L2280] static signed int * const bb_errno = &bb_errno_location; [L2281] static struct __jmp_buf_tag die_jmp[1l]; [L2282] static signed int die_sleep; [L2283] static signed char logmode = (signed char)1; [L2284] static const char *msg_eol = "\n"; [L2285] static unsigned char xfunc_error_retval = (unsigned char)1; [L2564] static struct passwd p; [L2586] static struct utmp dummy_utmp; [L2671] char *a = malloc(11); [L2672] a[10] = 0 [L2673] int i=0; VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=0, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND TRUE i<10 [L2674] a[i]=__VERIFIER_nondet_char() [L2673] ++i VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=1, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND TRUE i<10 [L2674] a[i]=__VERIFIER_nondet_char() [L2673] ++i VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=2, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND TRUE i<10 [L2674] a[i]=__VERIFIER_nondet_char() [L2673] ++i VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=3, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND TRUE i<10 [L2674] a[i]=__VERIFIER_nondet_char() [L2673] ++i VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=4, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND TRUE i<10 [L2674] a[i]=__VERIFIER_nondet_char() [L2673] ++i VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=5, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND TRUE i<10 [L2674] a[i]=__VERIFIER_nondet_char() [L2673] ++i VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=6, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND TRUE i<10 [L2674] a[i]=__VERIFIER_nondet_char() [L2673] ++i VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=7, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND TRUE i<10 [L2674] a[i]=__VERIFIER_nondet_char() [L2673] ++i VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=8, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND TRUE i<10 [L2674] a[i]=__VERIFIER_nondet_char() [L2673] ++i VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=9, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND TRUE i<10 [L2674] a[i]=__VERIFIER_nondet_char() [L2673] ++i VAL [a={-1:0}, applet_name={0:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=10, logmode=1, msg_eol={3:0}, p={20:0}, xfunc_error_retval=1] [L2673] COND FALSE !(i<10) [L2675] applet_name = a [L2676] bb_errno_location = __VERIFIER_nondet_int() [L2677] optind = 1 [L2678] int argc = __VERIFIER_nondet_int(); [L2679] CALL assume_abort_if_not(argc >= 1 && argc <= 10000) VAL [\old(cond)=1, applet_name={-1:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, logmode=1, msg_eol={3:0}, optind=1, p={20:0}, xfunc_error_retval=1] [L9] COND FALSE !(!cond) [L2679] RET assume_abort_if_not(argc >= 1 && argc <= 10000) VAL [a={-1:0}, applet_name={-1:0}, argc=2, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, logmode=1, msg_eol={3:0}, optind=1, p={20:0}, xfunc_error_retval=1] [L2680] EXPR argc+1 [L2680] char **argv=malloc((argc+1)*sizeof(char*)); [L2681] EXPR argc+1 [L2681] char **mem_track=malloc((argc+1)*sizeof(char*)); [L2682] argv[argc]=0 [L2683] int i=0; VAL [a={-1:0}, applet_name={-1:0}, argc=2, argv={-13:0}, bb_busybox_exec_path={16:0}, bb_default_login_shell={17:0}, bb_errno={18:0}, bb_errno_location={18:0}, die_jmp={19:0}, die_sleep=0, dummy_utmp={21:0}, i=0, logmode=1, mem_track={-30:0}, msg_eol={3:0}, optind=1, p={20:0}, xfunc_error_retval=1] [L2683] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/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 -> 2b93d9cdf019464a7132a47df13bc38f66feab56a28fc9b80b5d3e4c2c3e53cd [2023-12-02 18:29:42,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:29:43,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:29:43,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:29:43,015 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:29:43,015 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:29:43,016 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-1.i [2023-12-02 18:29:45,750 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:29:46,087 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:29:46,088 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/sv-benchmarks/c/busybox-1.22.0/chroot-incomplete-1.i [2023-12-02 18:29:46,114 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/data/101fde65d/f63c17e2adca4928816cfaa536da0b42/FLAGfc0306d06 [2023-12-02 18:29:46,128 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/data/101fde65d/f63c17e2adca4928816cfaa536da0b42 [2023-12-02 18:29:46,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:29:46,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:29:46,133 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:29:46,133 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:29:46,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:29:46,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:29:46" (1/1) ... [2023-12-02 18:29:46,139 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56f167a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:46, skipping insertion in model container [2023-12-02 18:29:46,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:29:46" (1/1) ... [2023-12-02 18:29:46,201 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:29:47,151 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:29:47,175 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 18:29:47,191 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:29:47,289 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:29:47,299 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:29:47,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:29:47,623 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:29:47,624 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 18:29:47,632 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:29:47,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47 WrapperNode [2023-12-02 18:29:47,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:29:47,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:29:47,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:29:47,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:29:47,642 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,690 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,748 INFO L138 Inliner]: procedures = 629, calls = 250, calls flagged for inlining = 25, calls inlined = 23, statements flattened = 702 [2023-12-02 18:29:47,749 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:29:47,750 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:29:47,750 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:29:47,750 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:29:47,760 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,787 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,788 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,838 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,859 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,871 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:29:47,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:29:47,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:29:47,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:29:47,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (1/1) ... [2023-12-02 18:29:47,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:29:47,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:29:47,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:29:47,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:29:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure execvp [2023-12-02 18:29:47,938 INFO L138 BoogieDeclarations]: Found implementation of procedure execvp [2023-12-02 18:29:47,938 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-12-02 18:29:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:29:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 18:29:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-12-02 18:29:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:29:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-12-02 18:29:47,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:29:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:29:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2023-12-02 18:29:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2023-12-02 18:29:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2023-12-02 18:29:47,940 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2023-12-02 18:29:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:29:47,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:29:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 18:29:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 18:29:47,941 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 18:29:47,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 18:29:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 18:29:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 18:29:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-12-02 18:29:47,942 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-12-02 18:29:47,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 18:29:47,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 18:29:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:29:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:29:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-12-02 18:29:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 18:29:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 18:29:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2023-12-02 18:29:47,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2023-12-02 18:29:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2023-12-02 18:29:47,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2023-12-02 18:29:48,323 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:29:48,325 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:29:53,470 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:29:53,545 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:29:53,545 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-12-02 18:29:53,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:29:53 BoogieIcfgContainer [2023-12-02 18:29:53,546 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:29:53,549 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:29:53,549 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:29:53,552 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:29:53,552 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:29:46" (1/3) ... [2023-12-02 18:29:53,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db867c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:29:53, skipping insertion in model container [2023-12-02 18:29:53,553 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:29:47" (2/3) ... [2023-12-02 18:29:53,553 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4db867c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:29:53, skipping insertion in model container [2023-12-02 18:29:53,554 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:29:53" (3/3) ... [2023-12-02 18:29:53,555 INFO L112 eAbstractionObserver]: Analyzing ICFG chroot-incomplete-1.i [2023-12-02 18:29:53,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:29:53,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-12-02 18:29:53,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:29:53,633 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;@766065f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:29:53,633 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-12-02 18:29:53,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 143 states have (on average 1.6853146853146854) internal successors, (241), 185 states have internal predecessors, (241), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-02 18:29:53,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 18:29:53,646 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:29:53,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 18:29:53,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:29:53,652 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:29:53,653 INFO L85 PathProgramCache]: Analyzing trace with hash 571338, now seen corresponding path program 1 times [2023-12-02 18:29:53,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:29:53,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130566636] [2023-12-02 18:29:53,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:29:53,669 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:29:53,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:29:53,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:29:53,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-02 18:29:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:29:53,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-02 18:29:53,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:29:53,996 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 18:29:54,027 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:29:54,028 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:29:54,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130566636] [2023-12-02 18:29:54,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130566636] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:29:54,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:29:54,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:29:54,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199253597] [2023-12-02 18:29:54,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:29:54,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 18:29:54,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:29:54,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 18:29:54,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:29:54,065 INFO L87 Difference]: Start difference. First operand has 205 states, 143 states have (on average 1.6853146853146854) internal successors, (241), 185 states have internal predecessors, (241), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 2 states, 1 states have (on average 3.0) 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 18:29:56,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:29:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:29:56,294 INFO L93 Difference]: Finished difference Result 387 states and 543 transitions. [2023-12-02 18:29:56,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 18:29:56,298 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) 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 18:29:56,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:29:56,307 INFO L225 Difference]: With dead ends: 387 [2023-12-02 18:29:56,307 INFO L226 Difference]: Without dead ends: 179 [2023-12-02 18:29:56,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 18:29:56,317 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:29:56,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 224 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2023-12-02 18:29:56,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2023-12-02 18:29:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2023-12-02 18:29:56,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 133 states have (on average 1.481203007518797) internal successors, (197), 162 states have internal predecessors, (197), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:29:56,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 224 transitions. [2023-12-02 18:29:56,363 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 224 transitions. Word has length 3 [2023-12-02 18:29:56,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:29:56,364 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 224 transitions. [2023-12-02 18:29:56,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) 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 18:29:56,365 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 224 transitions. [2023-12-02 18:29:56,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 18:29:56,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:29:56,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 18:29:56,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 18:29:56,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:29:56,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:29:56,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:29:56,567 INFO L85 PathProgramCache]: Analyzing trace with hash 17711829, now seen corresponding path program 1 times [2023-12-02 18:29:56,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:29:56,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20985648] [2023-12-02 18:29:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:29:56,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:29:56,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:29:56,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:29:56,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-02 18:29:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:29:56,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:29:56,828 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:29:56,855 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 18:29:56,855 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:29:56,856 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:29:56,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20985648] [2023-12-02 18:29:56,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20985648] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:29:56,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:29:56,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 18:29:56,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517949375] [2023-12-02 18:29:56,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:29:56,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:29:56,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:29:56,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:29:56,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:29:56,859 INFO L87 Difference]: Start difference. First operand 179 states and 224 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:29:58,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:29:58,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:29:58,974 INFO L93 Difference]: Finished difference Result 357 states and 447 transitions. [2023-12-02 18:29:58,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:29:58,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-12-02 18:29:58,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:29:58,978 INFO L225 Difference]: With dead ends: 357 [2023-12-02 18:29:58,978 INFO L226 Difference]: Without dead ends: 182 [2023-12-02 18:29:58,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:29:58,980 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:29:58,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 415 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 18:29:58,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-12-02 18:29:59,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2023-12-02 18:29:59,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 136 states have (on average 1.4705882352941178) internal successors, (200), 165 states have internal predecessors, (200), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:29:59,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 227 transitions. [2023-12-02 18:29:59,004 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 227 transitions. Word has length 4 [2023-12-02 18:29:59,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:29:59,005 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 227 transitions. [2023-12-02 18:29:59,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 18:29:59,005 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 227 transitions. [2023-12-02 18:29:59,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 18:29:59,005 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:29:59,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-12-02 18:29:59,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-12-02 18:29:59,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:29:59,206 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:29:59,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:29:59,207 INFO L85 PathProgramCache]: Analyzing trace with hash -627535993, now seen corresponding path program 1 times [2023-12-02 18:29:59,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:29:59,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [793014218] [2023-12-02 18:29:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:29:59,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:29:59,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:29:59,209 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:29:59,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-02 18:29:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:29:59,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:29:59,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:29:59,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:29:59,545 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:29:59,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:29:59,632 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:29:59,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [793014218] [2023-12-02 18:29:59,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [793014218] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:29:59,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [114327188] [2023-12-02 18:29:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:29:59,633 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:29:59,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:29:59,636 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:29:59,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-12-02 18:30:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:00,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:30:00,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:00,249 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:00,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [114327188] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:00,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692907876] [2023-12-02 18:30:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:00,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:30:00,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:30:00,287 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:30:00,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 18:30:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:00,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:30:00,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:00,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:00,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:00,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692907876] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:00,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:30:00,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 4 [2023-12-02 18:30:00,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742207155] [2023-12-02 18:30:00,637 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:30:00,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:30:00,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:30:00,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:30:00,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:30:00,639 INFO L87 Difference]: Start difference. First operand 182 states and 227 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 18:30:03,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:04,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:06,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:09,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:09,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:30:09,325 INFO L93 Difference]: Finished difference Result 361 states and 453 transitions. [2023-12-02 18:30:09,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:30:09,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 18:30:09,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:30:09,329 INFO L225 Difference]: With dead ends: 361 [2023-12-02 18:30:09,329 INFO L226 Difference]: Without dead ends: 186 [2023-12-02 18:30:09,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-12-02 18:30:09,332 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 3 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:30:09,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1031 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 2 Unknown, 0 Unchecked, 8.6s Time] [2023-12-02 18:30:09,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-02 18:30:09,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 182. [2023-12-02 18:30:09,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 137 states have (on average 1.4598540145985401) internal successors, (200), 165 states have internal predecessors, (200), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:30:09,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 227 transitions. [2023-12-02 18:30:09,349 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 227 transitions. Word has length 7 [2023-12-02 18:30:09,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:30:09,350 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 227 transitions. [2023-12-02 18:30:09,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 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 18:30:09,350 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 227 transitions. [2023-12-02 18:30:09,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 18:30:09,351 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:30:09,351 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:30:09,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2023-12-02 18:30:09,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-02 18:30:09,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 18:30:09,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:30:09,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:30:09,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:30:09,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1869630619, now seen corresponding path program 1 times [2023-12-02 18:30:09,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:30:09,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475247751] [2023-12-02 18:30:09,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:09,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:30:09,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:30:09,959 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:30:09,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-12-02 18:30:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:10,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:30:10,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:10,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:10,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:10,403 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:10,403 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:30:10,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475247751] [2023-12-02 18:30:10,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475247751] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1521542329] [2023-12-02 18:30:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:10,404 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:30:10,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:30:10,407 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:30:10,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-12-02 18:30:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:10,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:30:10,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:11,018 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:11,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1521542329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:11,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590477326] [2023-12-02 18:30:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:11,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:30:11,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:30:11,060 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:30:11,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 18:30:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:11,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:30:11,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 18:30:11,401 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:30:11,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590477326] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:30:11,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-12-02 18:30:11,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 5, 4, 5] total 11 [2023-12-02 18:30:11,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460364613] [2023-12-02 18:30:11,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:30:11,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 18:30:11,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:30:11,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 18:30:11,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-02 18:30:11,405 INFO L87 Difference]: Start difference. First operand 182 states and 227 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:30:13,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:14,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:16,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:30:16,775 INFO L93 Difference]: Finished difference Result 182 states and 227 transitions. [2023-12-02 18:30:16,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 18:30:16,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 18:30:16,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:30:16,779 INFO L225 Difference]: With dead ends: 182 [2023-12-02 18:30:16,779 INFO L226 Difference]: Without dead ends: 180 [2023-12-02 18:30:16,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:30:16,780 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 65 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-12-02 18:30:16,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 706 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 1 Unknown, 0 Unchecked, 5.3s Time] [2023-12-02 18:30:16,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-12-02 18:30:16,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2023-12-02 18:30:16,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 137 states have (on average 1.4452554744525548) internal successors, (198), 163 states have internal predecessors, (198), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:30:16,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 225 transitions. [2023-12-02 18:30:16,789 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 225 transitions. Word has length 16 [2023-12-02 18:30:16,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:30:16,790 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 225 transitions. [2023-12-02 18:30:16,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 18:30:16,791 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 225 transitions. [2023-12-02 18:30:16,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-12-02 18:30:16,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:30:16,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:30:16,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-12-02 18:30:16,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-12-02 18:30:17,198 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-12-02 18:30:17,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:30:17,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:30:17,393 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:30:17,393 INFO L85 PathProgramCache]: Analyzing trace with hash -85998329, now seen corresponding path program 1 times [2023-12-02 18:30:17,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:30:17,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571597097] [2023-12-02 18:30:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:17,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:30:17,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:30:17,395 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:30:17,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-12-02 18:30:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:17,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:30:17,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:17,699 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:17,699 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:17,803 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:17,803 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:30:17,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571597097] [2023-12-02 18:30:17,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571597097] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:17,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1138318176] [2023-12-02 18:30:17,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:17,804 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:30:17,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:30:17,805 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:30:17,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2023-12-02 18:30:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:18,414 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:30:18,415 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:18,442 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:18,442 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:18,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1138318176] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:18,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844109665] [2023-12-02 18:30:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:18,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:30:18,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:30:18,477 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:30:18,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 18:30:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:18,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:30:18,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 18:30:18,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:30:18,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844109665] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:30:18,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-12-02 18:30:18,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 5, 4, 5] total 9 [2023-12-02 18:30:18,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41683816] [2023-12-02 18:30:18,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:30:18,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:30:18,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:30:18,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:30:18,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:30:18,788 INFO L87 Difference]: Start difference. First operand 180 states and 225 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 18:30:20,947 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:22,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:23,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:30:23,032 INFO L93 Difference]: Finished difference Result 349 states and 439 transitions. [2023-12-02 18:30:23,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:30:23,034 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 22 [2023-12-02 18:30:23,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:30:23,036 INFO L225 Difference]: With dead ends: 349 [2023-12-02 18:30:23,036 INFO L226 Difference]: Without dead ends: 183 [2023-12-02 18:30:23,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:30:23,037 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:30:23,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 408 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-12-02 18:30:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-12-02 18:30:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2023-12-02 18:30:23,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 140 states have (on average 1.4357142857142857) internal successors, (201), 166 states have internal predecessors, (201), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:30:23,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 228 transitions. [2023-12-02 18:30:23,053 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 228 transitions. Word has length 22 [2023-12-02 18:30:23,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:30:23,053 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 228 transitions. [2023-12-02 18:30:23,054 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 18:30:23,054 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 228 transitions. [2023-12-02 18:30:23,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 18:30:23,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:30:23,055 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:30:23,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 18:30:23,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2023-12-02 18:30:23,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-12-02 18:30:23,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:30:23,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:30:23,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:30:23,656 INFO L85 PathProgramCache]: Analyzing trace with hash 880712610, now seen corresponding path program 1 times [2023-12-02 18:30:23,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:30:23,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967207874] [2023-12-02 18:30:23,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:23,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:30:23,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:30:23,658 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:30:23,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-12-02 18:30:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:23,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:30:23,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:23,967 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:23,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:24,073 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:30:24,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [967207874] [2023-12-02 18:30:24,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [967207874] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:24,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [728160991] [2023-12-02 18:30:24,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:24,074 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:30:24,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:30:24,075 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:30:24,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-12-02 18:30:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:24,765 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:30:24,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:24,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:24,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:30:24,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [728160991] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:24,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216163183] [2023-12-02 18:30:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:24,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:30:24,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:30:24,835 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:30:24,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 18:30:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:25,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 18:30:25,103 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 18:30:25,137 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 18:30:25,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216163183] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:30:25,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 4 imperfect interpolant sequences. [2023-12-02 18:30:25,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 5, 4, 5] total 9 [2023-12-02 18:30:25,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407864024] [2023-12-02 18:30:25,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:30:25,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:30:25,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:30:25,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:30:25,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:30:25,139 INFO L87 Difference]: Start difference. First operand 183 states and 228 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 18:30:26,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:28,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:28,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:30:28,765 INFO L93 Difference]: Finished difference Result 187 states and 232 transitions. [2023-12-02 18:30:28,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:30:28,768 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 25 [2023-12-02 18:30:28,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:30:28,769 INFO L225 Difference]: With dead ends: 187 [2023-12-02 18:30:28,769 INFO L226 Difference]: Without dead ends: 186 [2023-12-02 18:30:28,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 18:30:28,770 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-12-02 18:30:28,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 410 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2023-12-02 18:30:28,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2023-12-02 18:30:28,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2023-12-02 18:30:28,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 143 states have (on average 1.4265734265734267) internal successors, (204), 169 states have internal predecessors, (204), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:30:28,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 231 transitions. [2023-12-02 18:30:28,777 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 231 transitions. Word has length 25 [2023-12-02 18:30:28,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:30:28,778 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 231 transitions. [2023-12-02 18:30:28,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 18:30:28,778 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 231 transitions. [2023-12-02 18:30:28,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 18:30:28,779 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:30:28,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:30:28,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2023-12-02 18:30:28,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-12-02 18:30:29,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 18:30:29,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:30:29,380 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:30:29,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:30:29,381 INFO L85 PathProgramCache]: Analyzing trace with hash 2119633911, now seen corresponding path program 1 times [2023-12-02 18:30:29,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:30:29,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426930693] [2023-12-02 18:30:29,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:29,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:30:29,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:30:29,382 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:30:29,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-12-02 18:30:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:29,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:30:29,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:30:29,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:29,795 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:30:29,795 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:30:29,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426930693] [2023-12-02 18:30:29,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426930693] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:29,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [616719440] [2023-12-02 18:30:29,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:29,796 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:30:29,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:30:29,797 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:30:29,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2023-12-02 18:30:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:30,444 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 18:30:30,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:30,471 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:30:30,471 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:30,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:30:30,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [616719440] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:30,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11542973] [2023-12-02 18:30:30,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:30,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:30:30,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:30:30,508 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:30:30,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 18:30:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:30,813 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:30:30,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 18:30:30,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-12-02 18:30:31,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11542973] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:31,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:30:31,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 3, 3] total 12 [2023-12-02 18:30:31,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405710926] [2023-12-02 18:30:31,007 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:30:31,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-02 18:30:31,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:30:31,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-02 18:30:31,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-02 18:30:31,009 INFO L87 Difference]: Start difference. First operand 186 states and 231 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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 18:30:33,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:35,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:37,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:39,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:41,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:42,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:44,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:45,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:47,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:49,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:49,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:30:49,293 INFO L93 Difference]: Finished difference Result 380 states and 477 transitions. [2023-12-02 18:30:49,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 18:30:49,296 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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 25 [2023-12-02 18:30:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:30:49,298 INFO L225 Difference]: With dead ends: 380 [2023-12-02 18:30:49,298 INFO L226 Difference]: Without dead ends: 202 [2023-12-02 18:30:49,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-12-02 18:30:49,300 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 11 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 5 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:30:49,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1395 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 192 Invalid, 5 Unknown, 0 Unchecked, 18.1s Time] [2023-12-02 18:30:49,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-12-02 18:30:49,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 198. [2023-12-02 18:30:49,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 156 states have (on average 1.3846153846153846) internal successors, (216), 181 states have internal predecessors, (216), 15 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-12-02 18:30:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 243 transitions. [2023-12-02 18:30:49,312 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 243 transitions. Word has length 25 [2023-12-02 18:30:49,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:30:49,312 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 243 transitions. [2023-12-02 18:30:49,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 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 18:30:49,313 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 243 transitions. [2023-12-02 18:30:49,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 18:30:49,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:30:49,314 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:30:49,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-12-02 18:30:49,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-12-02 18:30:49,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2023-12-02 18:30:49,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 18:30:49,915 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_perror_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_perror_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-12-02 18:30:49,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:30:49,916 INFO L85 PathProgramCache]: Analyzing trace with hash 346057519, now seen corresponding path program 1 times [2023-12-02 18:30:49,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 18:30:49,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719690269] [2023-12-02 18:30:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:49,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-02 18:30:49,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 18:30:49,917 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-02 18:30:49,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-12-02 18:30:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:50,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:30:50,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:30:50,357 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:30:50,677 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 18:30:50,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719690269] [2023-12-02 18:30:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719690269] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:50,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [223641421] [2023-12-02 18:30:50,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:50,677 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 18:30:50,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 18:30:50,678 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 18:30:50,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 18:30:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:51,356 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 18:30:51,358 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:30:51,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:51,528 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 18:30:51,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [223641421] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:51,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589640479] [2023-12-02 18:30:51,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:30:51,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 18:30:51,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:30:51,529 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 18:30:51,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ae26004-abeb-4791-ac4a-ac65767145d8/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 18:30:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:30:51,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 18:30:51,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 18:30:51,942 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-02 18:30:51,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 18:30:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-12-02 18:30:52,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589640479] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 18:30:52,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 18:30:52,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 3, 3] total 20 [2023-12-02 18:30:52,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457600070] [2023-12-02 18:30:52,110 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 18:30:52,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-02 18:30:52,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 18:30:52,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-02 18:30:52,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-12-02 18:30:52,112 INFO L87 Difference]: Start difference. First operand 198 states and 243 transitions. Second operand has 20 states, 20 states have (on average 4.3) internal successors, (86), 20 states have internal predecessors, (86), 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 18:30:54,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:56,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:58,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:30:59,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 18:31:01,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []