./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/usleep-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/usleep-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91 --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 4062e3cb9e5074e61c7d68b2a1cb09dca27c1d3233deced6e2cc3cd3e3f5792f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:10:53,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:10:53,634 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-25 00:10:53,640 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:10:53,641 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:10:53,668 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:10:53,669 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:10:53,670 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:10:53,670 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:10:53,671 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:10:53,672 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:10:53,672 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:10:53,673 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:10:53,674 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:10:53,674 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:10:53,675 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:10:53,675 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:10:53,676 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:10:53,677 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:10:53,677 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:10:53,678 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:10:53,679 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:10:53,680 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:10:53,680 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-25 00:10:53,681 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:10:53,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:10:53,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-25 00:10:53,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:10:53,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-25 00:10:53,684 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-25 00:10:53,684 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:10:53,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-25 00:10:53,685 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:10:53,686 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:10:53,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:10:53,687 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:10:53,687 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:10:53,688 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:10:53,688 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:10:53,688 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-25 00:10:53,689 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:10:53,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:10:53,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:10:53,690 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-25 00:10:53,690 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:10:53,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:10:53,690 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_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4062e3cb9e5074e61c7d68b2a1cb09dca27c1d3233deced6e2cc3cd3e3f5792f [2023-11-25 00:10:53,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:10:53,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:10:53,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:10:53,960 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:10:53,962 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:10:53,963 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/busybox-1.22.0/usleep-1.i [2023-11-25 00:10:57,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:10:57,527 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:10:57,528 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/sv-benchmarks/c/busybox-1.22.0/usleep-1.i [2023-11-25 00:10:57,579 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/data/646350d43/fda10c55794f45f0a8c48a786369d0e6/FLAG3252025e3 [2023-11-25 00:10:57,596 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/data/646350d43/fda10c55794f45f0a8c48a786369d0e6 [2023-11-25 00:10:57,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:10:57,604 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:10:57,607 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:57,607 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:10:57,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:10:57,615 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:57" (1/1) ... [2023-11-25 00:10:57,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6576611d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:57, skipping insertion in model container [2023-11-25 00:10:57,616 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:10:57" (1/1) ... [2023-11-25 00:10:57,741 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:10:59,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:59,270 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:10:59,460 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:10:59,674 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:59,674 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-25 00:10:59,682 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:10:59,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59 WrapperNode [2023-11-25 00:10:59,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:10:59,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:59,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:10:59,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:10:59,691 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:10:59,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:10:59,836 INFO L138 Inliner]: procedures = 598, calls = 177, calls flagged for inlining = 19, calls inlined = 17, statements flattened = 636 [2023-11-25 00:10:59,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:10:59,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:10:59,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:10:59,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:10:59,848 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:10:59,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:10:59,863 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:10:59,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:10:59,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:10:59,947 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:10:59,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:10:59,975 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:11:00,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:11:00,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:11:00,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:11:00,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:11:00,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (1/1) ... [2023-11-25 00:11:00,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:11:00,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:00,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:11:00,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:11:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:11:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-25 00:11:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-25 00:11:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-25 00:11:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:11:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-25 00:11:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:11:00,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:11:00,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:11:00,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:11:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-25 00:11:00,201 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-25 00:11:00,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-25 00:11:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-25 00:11:00,202 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-25 00:11:00,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-25 00:11:00,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:11:00,203 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:11:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-25 00:11:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-25 00:11:00,204 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-25 00:11:00,204 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-25 00:11:00,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-25 00:11:00,670 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:11:00,693 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:11:01,403 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:11:01,603 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:11:01,603 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-25 00:11:01,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:11:01 BoogieIcfgContainer [2023-11-25 00:11:01,605 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:11:01,608 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:11:01,609 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:11:01,612 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:11:01,612 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:10:57" (1/3) ... [2023-11-25 00:11:01,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40987729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:11:01, skipping insertion in model container [2023-11-25 00:11:01,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:10:59" (2/3) ... [2023-11-25 00:11:01,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40987729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:11:01, skipping insertion in model container [2023-11-25 00:11:01,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:11:01" (3/3) ... [2023-11-25 00:11:01,616 INFO L112 eAbstractionObserver]: Analyzing ICFG usleep-1.i [2023-11-25 00:11:01,637 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:11:01,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-25 00:11:01,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:11:01,702 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;@1da4432f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:11:01,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2023-11-25 00:11:01,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 166 states, 110 states have (on average 1.7272727272727273) internal successors, (190), 152 states have internal predecessors, (190), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-11-25 00:11:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-25 00:11:01,716 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:01,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-25 00:11:01,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:01,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:01,723 INFO L85 PathProgramCache]: Analyzing trace with hash 538921, now seen corresponding path program 1 times [2023-11-25 00:11:01,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:01,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405394926] [2023-11-25 00:11:01,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:01,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:01,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:02,204 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:02,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405394926] [2023-11-25 00:11:02,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405394926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:02,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:02,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-25 00:11:02,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371346555] [2023-11-25 00:11:02,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:02,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:02,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:02,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:02,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:11:02,242 INFO L87 Difference]: Start difference. First operand has 166 states, 110 states have (on average 1.7272727272727273) internal successors, (190), 152 states have internal predecessors, (190), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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) [2023-11-25 00:11:02,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:02,419 INFO L93 Difference]: Finished difference Result 328 states and 421 transitions. [2023-11-25 00:11:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:02,422 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 [2023-11-25 00:11:02,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:02,431 INFO L225 Difference]: With dead ends: 328 [2023-11-25 00:11:02,431 INFO L226 Difference]: Without dead ends: 162 [2023-11-25 00:11:02,437 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 [2023-11-25 00:11:02,440 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:02,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 348 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:02,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-25 00:11:02,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2023-11-25 00:11:02,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 108 states have (on average 1.6574074074074074) internal successors, (179), 150 states have internal predecessors, (179), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 197 transitions. [2023-11-25 00:11:02,493 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 197 transitions. Word has length 3 [2023-11-25 00:11:02,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:02,493 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 197 transitions. [2023-11-25 00:11:02,494 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) [2023-11-25 00:11:02,494 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 197 transitions. [2023-11-25 00:11:02,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-25 00:11:02,494 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:02,495 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-25 00:11:02,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-25 00:11:02,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:02,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:02,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1124547133, now seen corresponding path program 1 times [2023-11-25 00:11:02,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:02,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703667334] [2023-11-25 00:11:02,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:02,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:02,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:02,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703667334] [2023-11-25 00:11:02,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703667334] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:02,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257600092] [2023-11-25 00:11:02,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:02,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:02,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:02,676 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:02,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-25 00:11:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:02,888 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:11:02,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:02,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:11:02,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257600092] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:02,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:11:02,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-25 00:11:02,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3719489] [2023-11-25 00:11:02,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:02,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:11:02,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:02,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:11:02,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:11:02,949 INFO L87 Difference]: Start difference. First operand 162 states and 197 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) [2023-11-25 00:11:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:03,095 INFO L93 Difference]: Finished difference Result 162 states and 197 transitions. [2023-11-25 00:11:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:11:03,096 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 [2023-11-25 00:11:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:03,101 INFO L225 Difference]: With dead ends: 162 [2023-11-25 00:11:03,101 INFO L226 Difference]: Without dead ends: 161 [2023-11-25 00:11:03,105 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 [2023-11-25 00:11:03,106 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 2 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:03,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 507 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-25 00:11:03,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2023-11-25 00:11:03,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 108 states have (on average 1.6481481481481481) internal successors, (178), 149 states have internal predecessors, (178), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 196 transitions. [2023-11-25 00:11:03,131 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 196 transitions. Word has length 6 [2023-11-25 00:11:03,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:03,131 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 196 transitions. [2023-11-25 00:11:03,131 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) [2023-11-25 00:11:03,131 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 196 transitions. [2023-11-25 00:11:03,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-25 00:11:03,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:03,136 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-25 00:11:03,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:03,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-25 00:11:03,349 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:03,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:03,350 INFO L85 PathProgramCache]: Analyzing trace with hash -501222426, now seen corresponding path program 1 times [2023-11-25 00:11:03,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:03,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34759129] [2023-11-25 00:11:03,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:03,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:11:03,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:03,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34759129] [2023-11-25 00:11:03,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34759129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:03,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:11:03,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:11:03,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394280555] [2023-11-25 00:11:03,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:03,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:03,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:03,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:03,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:11:03,467 INFO L87 Difference]: Start difference. First operand 161 states and 196 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) [2023-11-25 00:11:03,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:03,537 INFO L93 Difference]: Finished difference Result 161 states and 196 transitions. [2023-11-25 00:11:03,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:03,538 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 [2023-11-25 00:11:03,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:03,539 INFO L225 Difference]: With dead ends: 161 [2023-11-25 00:11:03,539 INFO L226 Difference]: Without dead ends: 160 [2023-11-25 00:11:03,539 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 [2023-11-25 00:11:03,541 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:03,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 338 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:03,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-25 00:11:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2023-11-25 00:11:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 106 states have (on average 1.650943396226415) internal successors, (175), 146 states have internal predecessors, (175), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:03,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 193 transitions. [2023-11-25 00:11:03,554 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 193 transitions. Word has length 7 [2023-11-25 00:11:03,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:03,554 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 193 transitions. [2023-11-25 00:11:03,554 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) [2023-11-25 00:11:03,555 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 193 transitions. [2023-11-25 00:11:03,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-25 00:11:03,555 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:03,555 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:03,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-25 00:11:03,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:03,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:03,556 INFO L85 PathProgramCache]: Analyzing trace with hash -407702660, now seen corresponding path program 1 times [2023-11-25 00:11:03,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:03,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913879581] [2023-11-25 00:11:03,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:03,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:03,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:03,680 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:03,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913879581] [2023-11-25 00:11:03,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913879581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:03,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114271277] [2023-11-25 00:11:03,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:03,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:03,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:03,682 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:03,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-25 00:11:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:03,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:11:03,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:11:03,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:11:03,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114271277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:03,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:11:03,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-25 00:11:03,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361647427] [2023-11-25 00:11:03,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:03,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:03,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:03,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:03,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:11:03,926 INFO L87 Difference]: Start difference. First operand 158 states and 193 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) [2023-11-25 00:11:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:04,004 INFO L93 Difference]: Finished difference Result 158 states and 193 transitions. [2023-11-25 00:11:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:04,005 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 [2023-11-25 00:11:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:04,006 INFO L225 Difference]: With dead ends: 158 [2023-11-25 00:11:04,006 INFO L226 Difference]: Without dead ends: 156 [2023-11-25 00:11:04,009 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 [2023-11-25 00:11:04,011 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 63 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:04,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 273 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:04,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-25 00:11:04,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-11-25 00:11:04,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 106 states have (on average 1.6320754716981132) internal successors, (173), 144 states have internal predecessors, (173), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:04,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 191 transitions. [2023-11-25 00:11:04,036 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 191 transitions. Word has length 9 [2023-11-25 00:11:04,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:04,038 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 191 transitions. [2023-11-25 00:11:04,038 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) [2023-11-25 00:11:04,038 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 191 transitions. [2023-11-25 00:11:04,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:11:04,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:04,039 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:04,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:04,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-25 00:11:04,246 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:04,246 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:04,247 INFO L85 PathProgramCache]: Analyzing trace with hash 246119766, now seen corresponding path program 1 times [2023-11-25 00:11:04,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:04,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343742221] [2023-11-25 00:11:04,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:04,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:04,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:04,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343742221] [2023-11-25 00:11:04,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343742221] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:04,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012845559] [2023-11-25 00:11:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:04,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:04,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:04,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:04,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-25 00:11:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:04,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:11:04,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:04,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:04,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:04,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012845559] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:04,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1178470666] [2023-11-25 00:11:04,708 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-11-25 00:11:04,708 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:11:04,713 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:11:04,719 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:11:04,719 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:11:07,443 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 89 for LOIs [2023-11-25 00:11:07,493 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:11:08,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1178470666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:08,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-25 00:11:08,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-11-25 00:11:08,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596376776] [2023-11-25 00:11:08,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:08,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-25 00:11:08,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:08,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-25 00:11:08,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:11:08,587 INFO L87 Difference]: Start difference. First operand 156 states and 191 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) [2023-11-25 00:11:10,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:10,177 INFO L93 Difference]: Finished difference Result 158 states and 192 transitions. [2023-11-25 00:11:10,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-25 00:11:10,179 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 [2023-11-25 00:11:10,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:10,180 INFO L225 Difference]: With dead ends: 158 [2023-11-25 00:11:10,180 INFO L226 Difference]: Without dead ends: 156 [2023-11-25 00:11:10,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-25 00:11:10,182 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 4 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:10,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 950 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-25 00:11:10,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-25 00:11:10,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-11-25 00:11:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 107 states have (on average 1.6074766355140186) internal successors, (172), 143 states have internal predecessors, (172), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 190 transitions. [2023-11-25 00:11:10,195 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 190 transitions. Word has length 10 [2023-11-25 00:11:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:10,195 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 190 transitions. [2023-11-25 00:11:10,195 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) [2023-11-25 00:11:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 190 transitions. [2023-11-25 00:11:10,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-25 00:11:10,196 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:10,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:10,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:10,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:10,403 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:10,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:10,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1477672361, now seen corresponding path program 1 times [2023-11-25 00:11:10,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:10,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388581382] [2023-11-25 00:11:10,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:10,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:10,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:10,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388581382] [2023-11-25 00:11:10,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388581382] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:10,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179822599] [2023-11-25 00:11:10,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:10,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:10,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:10,588 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:10,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-25 00:11:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:10,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:11:10,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:11:10,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:11:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179822599] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:10,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:11:10,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-25 00:11:10,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479487955] [2023-11-25 00:11:10,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:10,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:10,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:10,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:10,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:11:10,837 INFO L87 Difference]: Start difference. First operand 156 states and 190 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) [2023-11-25 00:11:10,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:10,919 INFO L93 Difference]: Finished difference Result 156 states and 190 transitions. [2023-11-25 00:11:10,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:10,919 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 [2023-11-25 00:11:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:10,921 INFO L225 Difference]: With dead ends: 156 [2023-11-25 00:11:10,921 INFO L226 Difference]: Without dead ends: 155 [2023-11-25 00:11:10,921 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 [2023-11-25 00:11:10,922 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 7 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:10,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 319 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:10,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-25 00:11:10,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-25 00:11:10,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 107 states have (on average 1.5981308411214954) internal successors, (171), 142 states have internal predecessors, (171), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:10,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 189 transitions. [2023-11-25 00:11:10,935 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 189 transitions. Word has length 15 [2023-11-25 00:11:10,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:10,936 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 189 transitions. [2023-11-25 00:11:10,936 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) [2023-11-25 00:11:10,936 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 189 transitions. [2023-11-25 00:11:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-25 00:11:10,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:10,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:10,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:11,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:11,149 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:11,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:11,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1477666121, now seen corresponding path program 1 times [2023-11-25 00:11:11,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:11,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913733301] [2023-11-25 00:11:11,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:11,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:11,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:11,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913733301] [2023-11-25 00:11:11,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913733301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:11,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [236419206] [2023-11-25 00:11:11,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:11,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:11,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:11,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:11,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-25 00:11:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:11,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:11:11,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:11,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:11:11,564 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:11:11,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [236419206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:11,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:11:11,565 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-25 00:11:11,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350725822] [2023-11-25 00:11:11,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:11,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:11,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:11,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:11,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:11:11,568 INFO L87 Difference]: Start difference. First operand 155 states and 189 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) [2023-11-25 00:11:11,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:11,638 INFO L93 Difference]: Finished difference Result 155 states and 189 transitions. [2023-11-25 00:11:11,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:11,640 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 [2023-11-25 00:11:11,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:11,641 INFO L225 Difference]: With dead ends: 155 [2023-11-25 00:11:11,642 INFO L226 Difference]: Without dead ends: 154 [2023-11-25 00:11:11,642 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 [2023-11-25 00:11:11,643 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 2 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:11,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 323 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:11,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-25 00:11:11,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-25 00:11:11,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 107 states have (on average 1.588785046728972) internal successors, (170), 141 states have internal predecessors, (170), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:11,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 188 transitions. [2023-11-25 00:11:11,656 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 188 transitions. Word has length 15 [2023-11-25 00:11:11,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:11,656 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 188 transitions. [2023-11-25 00:11:11,656 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) [2023-11-25 00:11:11,657 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 188 transitions. [2023-11-25 00:11:11,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-25 00:11:11,657 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:11,657 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:11,669 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:11,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-25 00:11:11,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:11,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:11,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1436796693, now seen corresponding path program 1 times [2023-11-25 00:11:11,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:11,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121240814] [2023-11-25 00:11:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:11,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:11,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:12,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:12,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121240814] [2023-11-25 00:11:12,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121240814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:12,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487136123] [2023-11-25 00:11:12,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:12,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:12,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:12,013 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:12,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-25 00:11:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:12,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:11:12,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:11:12,266 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:11:12,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487136123] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:12,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:11:12,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-25 00:11:12,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558123795] [2023-11-25 00:11:12,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:12,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:12,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:12,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:12,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:11:12,268 INFO L87 Difference]: Start difference. First operand 154 states and 188 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) [2023-11-25 00:11:12,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:12,350 INFO L93 Difference]: Finished difference Result 162 states and 198 transitions. [2023-11-25 00:11:12,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:12,351 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 [2023-11-25 00:11:12,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:12,352 INFO L225 Difference]: With dead ends: 162 [2023-11-25 00:11:12,352 INFO L226 Difference]: Without dead ends: 161 [2023-11-25 00:11:12,352 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 [2023-11-25 00:11:12,353 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 4 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:12,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 322 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:12,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-25 00:11:12,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2023-11-25 00:11:12,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 113 states have (on average 1.584070796460177) internal successors, (179), 147 states have internal predecessors, (179), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:12,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 197 transitions. [2023-11-25 00:11:12,363 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 197 transitions. Word has length 16 [2023-11-25 00:11:12,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:12,363 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 197 transitions. [2023-11-25 00:11:12,363 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) [2023-11-25 00:11:12,364 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 197 transitions. [2023-11-25 00:11:12,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-25 00:11:12,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:12,365 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:12,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:12,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-25 00:11:12,576 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:12,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:12,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1436990142, now seen corresponding path program 1 times [2023-11-25 00:11:12,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:12,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450751678] [2023-11-25 00:11:12,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:12,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:12,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:12,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:12,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450751678] [2023-11-25 00:11:12,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450751678] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:12,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060907068] [2023-11-25 00:11:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:12,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:12,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:12,707 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:12,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-25 00:11:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:12,952 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:11:12,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:12,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-25 00:11:12,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:11:12,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060907068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:12,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:11:12,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-25 00:11:12,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941388913] [2023-11-25 00:11:12,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:12,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:12,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:12,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:12,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:11:12,968 INFO L87 Difference]: Start difference. First operand 160 states and 197 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) [2023-11-25 00:11:13,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:13,042 INFO L93 Difference]: Finished difference Result 310 states and 384 transitions. [2023-11-25 00:11:13,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:13,042 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 [2023-11-25 00:11:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:13,044 INFO L225 Difference]: With dead ends: 310 [2023-11-25 00:11:13,044 INFO L226 Difference]: Without dead ends: 166 [2023-11-25 00:11:13,045 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 [2023-11-25 00:11:13,047 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:13,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 324 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:13,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-25 00:11:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-11-25 00:11:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 119 states have (on average 1.5546218487394958) internal successors, (185), 153 states have internal predecessors, (185), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 203 transitions. [2023-11-25 00:11:13,058 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 203 transitions. Word has length 16 [2023-11-25 00:11:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:13,058 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 203 transitions. [2023-11-25 00:11:13,058 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) [2023-11-25 00:11:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 203 transitions. [2023-11-25 00:11:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-25 00:11:13,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:13,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:13,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:13,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-25 00:11:13,267 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:13,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1429925768, now seen corresponding path program 1 times [2023-11-25 00:11:13,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:13,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357879981] [2023-11-25 00:11:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:13,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:13,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:13,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:13,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357879981] [2023-11-25 00:11:13,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357879981] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:13,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060672175] [2023-11-25 00:11:13,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:13,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:13,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:13,373 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:13,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-25 00:11:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:13,622 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:11:13,625 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:13,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:13,637 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:13,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:11:13,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060672175] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:13,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [579858532] [2023-11-25 00:11:13,662 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2023-11-25 00:11:13,662 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:11:13,662 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:11:13,663 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:11:13,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:11:15,422 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 89 for LOIs [2023-11-25 00:11:15,457 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:11:16,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [579858532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:16,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-11-25 00:11:16,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [4, 3, 4] total 15 [2023-11-25 00:11:16,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076829886] [2023-11-25 00:11:16,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:16,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-25 00:11:16,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:16,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-25 00:11:16,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-25 00:11:16,956 INFO L87 Difference]: Start difference. First operand 166 states and 203 transitions. Second operand has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2023-11-25 00:11:19,199 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] [2023-11-25 00:11:20,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:20,428 INFO L93 Difference]: Finished difference Result 300 states and 368 transitions. [2023-11-25 00:11:20,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-25 00:11:20,429 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 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 [2023-11-25 00:11:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:20,430 INFO L225 Difference]: With dead ends: 300 [2023-11-25 00:11:20,430 INFO L226 Difference]: Without dead ends: 166 [2023-11-25 00:11:20,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=44, Invalid=165, Unknown=1, NotChecked=0, Total=210 [2023-11-25 00:11:20,432 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 2 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:20,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 812 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 296 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2023-11-25 00:11:20,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-25 00:11:20,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2023-11-25 00:11:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 119 states have (on average 1.546218487394958) internal successors, (184), 153 states have internal predecessors, (184), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:20,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 202 transitions. [2023-11-25 00:11:20,444 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 202 transitions. Word has length 16 [2023-11-25 00:11:20,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:20,444 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 202 transitions. [2023-11-25 00:11:20,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.75) internal successors, (14), 8 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) [2023-11-25 00:11:20,445 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 202 transitions. [2023-11-25 00:11:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-25 00:11:20,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:20,445 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:20,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-25 00:11:20,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-25 00:11:20,652 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:20,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:20,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1433925498, now seen corresponding path program 1 times [2023-11-25 00:11:20,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:20,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371150317] [2023-11-25 00:11:20,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:20,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:20,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-25 00:11:20,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:20,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371150317] [2023-11-25 00:11:20,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371150317] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:20,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304925553] [2023-11-25 00:11:20,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:20,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:20,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:20,797 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:20,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-25 00:11:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:21,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:11:21,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:11:21,064 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:11:21,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304925553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:11:21,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-25 00:11:21,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-25 00:11:21,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63722521] [2023-11-25 00:11:21,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:11:21,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:11:21,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:21,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:11:21,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:11:21,067 INFO L87 Difference]: Start difference. First operand 166 states and 202 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) [2023-11-25 00:11:21,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:21,159 INFO L93 Difference]: Finished difference Result 166 states and 202 transitions. [2023-11-25 00:11:21,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:11:21,160 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 [2023-11-25 00:11:21,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:21,162 INFO L225 Difference]: With dead ends: 166 [2023-11-25 00:11:21,162 INFO L226 Difference]: Without dead ends: 165 [2023-11-25 00:11:21,162 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 [2023-11-25 00:11:21,163 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:21,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 323 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:21,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-25 00:11:21,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 161. [2023-11-25 00:11:21,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 115 states have (on average 1.5478260869565217) internal successors, (178), 148 states have internal predecessors, (178), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:21,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 196 transitions. [2023-11-25 00:11:21,175 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 196 transitions. Word has length 19 [2023-11-25 00:11:21,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:21,175 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 196 transitions. [2023-11-25 00:11:21,175 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) [2023-11-25 00:11:21,176 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 196 transitions. [2023-11-25 00:11:21,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-25 00:11:21,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:21,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:21,184 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-25 00:11:21,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-25 00:11:21,383 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:21,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash 945004239, now seen corresponding path program 1 times [2023-11-25 00:11:21,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:21,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419890216] [2023-11-25 00:11:21,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:21,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:21,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:21,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:11:21,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419890216] [2023-11-25 00:11:21,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419890216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:21,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341222024] [2023-11-25 00:11:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:21,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:21,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:21,519 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:21,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-25 00:11:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:21,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:11:21,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:21,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:11:21,818 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:21,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-25 00:11:21,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341222024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:21,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [541705681] [2023-11-25 00:11:21,846 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-11-25 00:11:21,846 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:11:21,847 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:11:21,847 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:11:21,848 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:11:29,622 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 89 for LOIs [2023-11-25 00:11:29,646 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:11:33,928 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5442#(and (= |ULTIMATE.start_xatou_sfx_~numstr#1.offset| |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.offset|) (= |ULTIMATE.start___main_#in~argv#1.offset| |ULTIMATE.start_main_~argv~0#1.offset|) (= |ULTIMATE.start_xatou_sfx_~suffixes#1.offset| 0) (= |ULTIMATE.start_xatou_sfx_~numstr#1.base| |ULTIMATE.start_xatou_sfx_#in~numstr#1.base|) (= |ULTIMATE.start_xatou_sfx_#in~suffixes#1.offset| 0) (= |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.offset| |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.offset| 0) (= 10 |ULTIMATE.start_xstrtou_range_sfx_~base#1|) (= |ULTIMATE.start___main_#t~mem108#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start___main_~argv#1.base|) (+ 8 |ULTIMATE.start___main_~argv#1.offset|))) (<= (+ 2147483640 |ULTIMATE.start_xstrtou_range_sfx_#t~mem117#1|) 0) (= |ULTIMATE.start_xatou_sfx_#in~suffixes#1.base| 0) (= |ULTIMATE.start_xatou_~numstr#1.base| |ULTIMATE.start_xatou_sfx_#in~numstr#1.base|) (= |ULTIMATE.start_xstrtou_range_sfx_~tmp_if_expr$1~1#1| 0) (= |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.base| |ULTIMATE.start_xatou_sfx_~numstr#1.base|) (not (= |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base| 0)) (= |ULTIMATE.start_xstrtou_range_sfx_~suffixes#1.base| 0) (= |ULTIMATE.start___main_~argv#1.base| |ULTIMATE.start___main_#in~argv#1.base|) (= 0 |ULTIMATE.start_xstrtou_range_sfx_#in~suffixes#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~upper#1| 4294967295) (= |ULTIMATE.start_xatou_sfx_~suffixes#1.base| 0) (= |ULTIMATE.start_xatou_~numstr#1.offset| |ULTIMATE.start_xatou_#in~numstr#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~base#1| 10) (= |ULTIMATE.start___main_#t~mem108#1.base| |ULTIMATE.start_xatou_#in~numstr#1.base|) (= |ULTIMATE.start_xatou_sfx_#in~numstr#1.offset| |ULTIMATE.start_xatou_sfx_~numstr#1.offset|) (exists ((|v_ULTIMATE.start_main_~i~4#1_31| Int) (|v_#length_66| (Array Int Int)) (|v_#valid_108| (Array Int Int))) (and (= (store |v_#valid_108| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base| 1) |#valid|) (<= |ULTIMATE.start_main_~argc~0#1| |v_ULTIMATE.start_main_~i~4#1_31|) (= (select |v_#valid_108| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base|) 0) (= |#length| (store |v_#length_66| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base| 8)) (<= |v_ULTIMATE.start_main_~i~4#1_31| 2147483647) (<= 0 (+ |v_ULTIMATE.start_main_~i~4#1_31| 2147483648)))) (= |ULTIMATE.start_xstrtou_range_sfx_#t~mem117#1| (select (select |#memory_int| |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.base|) |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.offset|)) (= 4294967295 |ULTIMATE.start_xstrtou_range_sfx_~upper#1|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~lower#1| 0) (= |ULTIMATE.start_xstrtou_range_sfx_#in~suffixes#1.base| 0) (= |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.base| |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.base|) (= |ULTIMATE.start_xatou_sfx_#in~numstr#1.offset| |ULTIMATE.start_xatou_~numstr#1.offset|) (= |ULTIMATE.start___main_#t~mem108#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start___main_~argv#1.base|) (+ 8 |ULTIMATE.start___main_~argv#1.offset|))) (= |ULTIMATE.start___main_#in~argc#1| |ULTIMATE.start_main_~argc~0#1|) (= |ULTIMATE.start___main_~argc#1| |ULTIMATE.start___main_#in~argc#1|) (= |ULTIMATE.start_xstrtou_range_sfx_~lower#1| 0) (= |ULTIMATE.start___main_#t~mem108#1.offset| |ULTIMATE.start_xatou_#in~numstr#1.offset|) (= |ULTIMATE.start_main_~argv~0#1.base| |ULTIMATE.start___main_#in~argv#1.base|) (= |ULTIMATE.start_xstrtou_range_sfx_~suffixes#1.offset| 0) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base|) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start___main_~argv#1.base|) (+ 8 |ULTIMATE.start___main_~argv#1.offset|)) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start___main_~argv#1.base|) (+ 8 |ULTIMATE.start___main_~argv#1.offset|)) 0))) (= |ULTIMATE.start___main_#in~argv#1.offset| |ULTIMATE.start___main_~argv#1.offset|) (= |ULTIMATE.start_xatou_~numstr#1.base| |ULTIMATE.start_xatou_#in~numstr#1.base|))' at error location [2023-11-25 00:11:33,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:11:33,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-25 00:11:33,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-25 00:11:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922623019] [2023-11-25 00:11:33,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-25 00:11:33,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:11:33,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:33,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:11:33,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=401, Unknown=3, NotChecked=0, Total=462 [2023-11-25 00:11:33,931 INFO L87 Difference]: Start difference. First operand 161 states and 196 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2023-11-25 00:11:34,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:34,053 INFO L93 Difference]: Finished difference Result 326 states and 398 transitions. [2023-11-25 00:11:34,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:11:34,054 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 23 [2023-11-25 00:11:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:34,055 INFO L225 Difference]: With dead ends: 326 [2023-11-25 00:11:34,056 INFO L226 Difference]: Without dead ends: 170 [2023-11-25 00:11:34,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=58, Invalid=401, Unknown=3, NotChecked=0, Total=462 [2023-11-25 00:11:34,057 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 4 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:34,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 486 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:34,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2023-11-25 00:11:34,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2023-11-25 00:11:34,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 124 states have (on average 1.5080645161290323) internal successors, (187), 157 states have internal predecessors, (187), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:34,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 205 transitions. [2023-11-25 00:11:34,071 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 205 transitions. Word has length 23 [2023-11-25 00:11:34,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:34,071 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 205 transitions. [2023-11-25 00:11:34,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2023-11-25 00:11:34,071 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 205 transitions. [2023-11-25 00:11:34,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-25 00:11:34,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:34,073 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:34,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-25 00:11:34,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-25 00:11:34,279 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:34,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:34,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1064738647, now seen corresponding path program 2 times [2023-11-25 00:11:34,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:34,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443704621] [2023-11-25 00:11:34,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:34,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-25 00:11:34,463 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:34,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443704621] [2023-11-25 00:11:34,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443704621] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:34,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369305138] [2023-11-25 00:11:34,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-25 00:11:34,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:34,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:34,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:34,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-25 00:11:34,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-25 00:11:34,849 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:11:34,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:11:34,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-25 00:11:34,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:34,887 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-25 00:11:34,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369305138] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:34,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1698442279] [2023-11-25 00:11:34,890 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-11-25 00:11:34,890 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:11:34,891 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:11:34,891 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:11:34,891 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-25 00:11:42,452 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 89 for LOIs [2023-11-25 00:11:42,467 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-25 00:11:48,784 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '6243#(and (= |ULTIMATE.start_xatou_sfx_~numstr#1.offset| |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.offset|) (= |ULTIMATE.start___main_#in~argv#1.offset| |ULTIMATE.start_main_~argv~0#1.offset|) (= |ULTIMATE.start_xatou_sfx_~suffixes#1.offset| 0) (= |ULTIMATE.start_xatou_sfx_~numstr#1.base| |ULTIMATE.start_xatou_sfx_#in~numstr#1.base|) (= |ULTIMATE.start_xatou_sfx_#in~suffixes#1.offset| 0) (= |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.offset| |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.offset| 0) (= 10 |ULTIMATE.start_xstrtou_range_sfx_~base#1|) (= |ULTIMATE.start___main_#t~mem108#1.base| (select (select |#memory_$Pointer$.base| |ULTIMATE.start___main_~argv#1.base|) (+ 8 |ULTIMATE.start___main_~argv#1.offset|))) (<= (+ 2147483640 |ULTIMATE.start_xstrtou_range_sfx_#t~mem117#1|) 0) (= |ULTIMATE.start_xatou_sfx_#in~suffixes#1.base| 0) (= |ULTIMATE.start_xatou_~numstr#1.base| |ULTIMATE.start_xatou_sfx_#in~numstr#1.base|) (= |ULTIMATE.start_xstrtou_range_sfx_~tmp_if_expr$1~1#1| 0) (= |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.base| |ULTIMATE.start_xatou_sfx_~numstr#1.base|) (not (= |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base| 0)) (= |ULTIMATE.start_xstrtou_range_sfx_~suffixes#1.base| 0) (= |ULTIMATE.start___main_~argv#1.base| |ULTIMATE.start___main_#in~argv#1.base|) (= 0 |ULTIMATE.start_xstrtou_range_sfx_#in~suffixes#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~upper#1| 4294967295) (= |ULTIMATE.start_xatou_sfx_~suffixes#1.base| 0) (= |ULTIMATE.start_xatou_~numstr#1.offset| |ULTIMATE.start_xatou_#in~numstr#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~base#1| 10) (= |ULTIMATE.start___main_#t~mem108#1.base| |ULTIMATE.start_xatou_#in~numstr#1.base|) (= |ULTIMATE.start_xatou_sfx_#in~numstr#1.offset| |ULTIMATE.start_xatou_sfx_~numstr#1.offset|) (= |ULTIMATE.start_xstrtou_range_sfx_#t~mem117#1| (select (select |#memory_int| |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.base|) |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.offset|)) (= 4294967295 |ULTIMATE.start_xstrtou_range_sfx_~upper#1|) (= |ULTIMATE.start_xstrtou_range_sfx_#in~lower#1| 0) (= |ULTIMATE.start_xstrtou_range_sfx_#in~suffixes#1.base| 0) (exists ((|v_#length_75| (Array Int Int)) (|v_#valid_117| (Array Int Int)) (|v_ULTIMATE.start_main_~i~4#1_35| Int)) (and (= |#length| (store |v_#length_75| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base| 8)) (<= |ULTIMATE.start_main_~argc~0#1| |v_ULTIMATE.start_main_~i~4#1_35|) (= (store |v_#valid_117| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base| 1) |#valid|) (= 0 (select |v_#valid_117| |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base|)) (<= 0 (+ |v_ULTIMATE.start_main_~i~4#1_35| 2147483648)) (<= |v_ULTIMATE.start_main_~i~4#1_35| 2147483647))) (= |ULTIMATE.start_xstrtou_range_sfx_#in~numstr#1.base| |ULTIMATE.start_xstrtou_range_sfx_~numstr#1.base|) (= |ULTIMATE.start_xatou_sfx_#in~numstr#1.offset| |ULTIMATE.start_xatou_~numstr#1.offset|) (= |ULTIMATE.start___main_#t~mem108#1.offset| (select (select |#memory_$Pointer$.offset| |ULTIMATE.start___main_~argv#1.base|) (+ 8 |ULTIMATE.start___main_~argv#1.offset|))) (= |ULTIMATE.start___main_#in~argc#1| |ULTIMATE.start_main_~argc~0#1|) (= |ULTIMATE.start___main_~argc#1| |ULTIMATE.start___main_#in~argc#1|) (= |ULTIMATE.start_xstrtou_range_sfx_~lower#1| 0) (= |ULTIMATE.start___main_#t~mem108#1.offset| |ULTIMATE.start_xatou_#in~numstr#1.offset|) (= |ULTIMATE.start_main_~argv~0#1.base| |ULTIMATE.start___main_#in~argv#1.base|) (= |ULTIMATE.start_xstrtou_range_sfx_~suffixes#1.offset| 0) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_xstrtou_range_sfx_~#e~0#1.base|) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start___main_~argv#1.base|) (+ 8 |ULTIMATE.start___main_~argv#1.offset|)) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start___main_~argv#1.base|) (+ 8 |ULTIMATE.start___main_~argv#1.offset|)) 0))) (= |ULTIMATE.start___main_#in~argv#1.offset| |ULTIMATE.start___main_~argv#1.offset|) (= |ULTIMATE.start_xatou_~numstr#1.base| |ULTIMATE.start_xatou_#in~numstr#1.base|))' at error location [2023-11-25 00:11:48,785 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-25 00:11:48,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-25 00:11:48,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-25 00:11:48,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346024763] [2023-11-25 00:11:48,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-25 00:11:48,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-25 00:11:48,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-25 00:11:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-25 00:11:48,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=399, Unknown=3, NotChecked=0, Total=462 [2023-11-25 00:11:48,787 INFO L87 Difference]: Start difference. First operand 170 states and 205 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2023-11-25 00:11:48,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:11:48,919 INFO L93 Difference]: Finished difference Result 332 states and 406 transitions. [2023-11-25 00:11:48,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-25 00:11:48,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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 32 [2023-11-25 00:11:48,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:11:48,921 INFO L225 Difference]: With dead ends: 332 [2023-11-25 00:11:48,921 INFO L226 Difference]: Without dead ends: 188 [2023-11-25 00:11:48,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=60, Invalid=399, Unknown=3, NotChecked=0, Total=462 [2023-11-25 00:11:48,923 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 4 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-25 00:11:48,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 484 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-25 00:11:48,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2023-11-25 00:11:48,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2023-11-25 00:11:48,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 142 states have (on average 1.443661971830986) internal successors, (205), 175 states have internal predecessors, (205), 10 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-25 00:11:48,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 223 transitions. [2023-11-25 00:11:48,937 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 223 transitions. Word has length 32 [2023-11-25 00:11:48,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:11:48,938 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 223 transitions. [2023-11-25 00:11:48,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2023-11-25 00:11:48,938 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 223 transitions. [2023-11-25 00:11:48,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-25 00:11:48,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:11:48,939 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:11:48,953 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-25 00:11:49,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-25 00:11:49,148 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_error_msg_and_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_error_msg_and_dieErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 39 more)] === [2023-11-25 00:11:49,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:11:49,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1220066319, now seen corresponding path program 3 times [2023-11-25 00:11:49,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-25 00:11:49,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510004354] [2023-11-25 00:11:49,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:11:49,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-25 00:11:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:11:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-25 00:11:49,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-25 00:11:49,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510004354] [2023-11-25 00:11:49,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510004354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-25 00:11:49,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497738052] [2023-11-25 00:11:49,470 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-25 00:11:49,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-25 00:11:49,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:11:49,472 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-25 00:11:49,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a2b22e1-c3ad-497d-aa6f-0badedbd303d/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-25 00:11:49,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-25 00:11:49,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-25 00:11:49,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:11:49,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:11:49,833 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-25 00:11:49,833 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-25 00:11:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-25 00:11:49,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497738052] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-25 00:11:49,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [759154072] [2023-11-25 00:11:49,915 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2023-11-25 00:11:49,915 INFO L166 IcfgInterpreter]: Building call graph [2023-11-25 00:11:49,915 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-25 00:11:49,916 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-25 00:11:49,916 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs