./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array2_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 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_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array2_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 19:42:41,436 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 19:42:41,518 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-21 19:42:41,524 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 19:42:41,525 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 19:42:41,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 19:42:41,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 19:42:41,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 19:42:41,557 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 19:42:41,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 19:42:41,559 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-21 19:42:41,559 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-21 19:42:41,560 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-21 19:42:41,561 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-21 19:42:41,562 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-21 19:42:41,562 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-21 19:42:41,563 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-21 19:42:41,564 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-21 19:42:41,564 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-21 19:42:41,565 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-21 19:42:41,566 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-21 19:42:41,567 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-21 19:42:41,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 19:42:41,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 19:42:41,569 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 19:42:41,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 19:42:41,573 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 19:42:41,573 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 19:42:41,574 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 19:42:41,574 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 19:42:41,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 19:42:41,576 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 19:42:41,576 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 19:42:41,577 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 19:42:41,577 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 19:42:41,578 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 19:42:41,579 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 19:42:41,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:42:41,579 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 19:42:41,580 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 19:42:41,580 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 19:42:41,580 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-21 19:42:41,581 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 19:42:41,581 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 19:42:41,582 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 19:42:41,582 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-21 19:42:41,582 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 19:42:41,582 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_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a25becec148beba97bef86c2a84619bb26dfafe7c127e8d70246837f0d2d470 [2023-11-21 19:42:41,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 19:42:41,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 19:42:41,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 19:42:41,915 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 19:42:41,916 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 19:42:41,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/../../sv-benchmarks/c/array-patterns/array2_pattern.c [2023-11-21 19:42:45,200 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 19:42:45,469 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 19:42:45,470 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/sv-benchmarks/c/array-patterns/array2_pattern.c [2023-11-21 19:42:45,479 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/data/ce4ab1d98/dbbd8e43d5704b65936792f598ef4775/FLAGd265d4df5 [2023-11-21 19:42:45,495 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/data/ce4ab1d98/dbbd8e43d5704b65936792f598ef4775 [2023-11-21 19:42:45,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 19:42:45,500 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 19:42:45,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 19:42:45,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 19:42:45,509 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 19:42:45,510 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,512 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217fb56b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45, skipping insertion in model container [2023-11-21 19:42:45,512 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,542 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 19:42:45,710 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/sv-benchmarks/c/array-patterns/array2_pattern.c[1322,1335] [2023-11-21 19:42:45,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:42:45,747 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 19:42:45,760 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/sv-benchmarks/c/array-patterns/array2_pattern.c[1322,1335] [2023-11-21 19:42:45,772 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 19:42:45,791 INFO L206 MainTranslator]: Completed translation [2023-11-21 19:42:45,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45 WrapperNode [2023-11-21 19:42:45,792 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 19:42:45,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 19:42:45,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 19:42:45,794 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 19:42:45,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,811 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,847 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2023-11-21 19:42:45,848 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 19:42:45,848 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 19:42:45,849 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 19:42:45,849 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 19:42:45,857 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,867 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 19:42:45,880 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 19:42:45,881 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 19:42:45,881 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 19:42:45,882 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (1/1) ... [2023-11-21 19:42:45,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 19:42:45,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:42:45,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 19:42:45,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 19:42:45,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 19:42:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-21 19:42:45,985 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-21 19:42:45,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 19:42:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 19:42:45,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 19:42:45,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 19:42:45,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 19:42:45,989 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 19:42:45,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 19:42:46,100 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 19:42:46,103 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 19:42:46,404 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 19:42:46,451 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 19:42:46,451 INFO L308 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-21 19:42:46,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:42:46 BoogieIcfgContainer [2023-11-21 19:42:46,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 19:42:46,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 19:42:46,458 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 19:42:46,462 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 19:42:46,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 07:42:45" (1/3) ... [2023-11-21 19:42:46,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6c7df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:42:46, skipping insertion in model container [2023-11-21 19:42:46,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 07:42:45" (2/3) ... [2023-11-21 19:42:46,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6c7df0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 07:42:46, skipping insertion in model container [2023-11-21 19:42:46,464 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 07:42:46" (3/3) ... [2023-11-21 19:42:46,467 INFO L112 eAbstractionObserver]: Analyzing ICFG array2_pattern.c [2023-11-21 19:42:46,491 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 19:42:46,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 19:42:46,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 19:42:46,549 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;@837d2f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 19:42:46,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 19:42:46,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:42:46,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-21 19:42:46,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:42:46,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:42:46,563 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:42:46,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:42:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1448951051, now seen corresponding path program 1 times [2023-11-21 19:42:46,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:42:46,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345941382] [2023-11-21 19:42:46,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:42:46,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:42:46,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:42:46,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:42:46,796 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:42:46,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345941382] [2023-11-21 19:42:46,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345941382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:42:46,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:42:46,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 19:42:46,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363969958] [2023-11-21 19:42:46,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:42:46,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 19:42:46,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:42:46,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 19:42:46,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:42:46,877 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-21 19:42:46,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:42:46,920 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2023-11-21 19:42:46,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 19:42:46,923 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 11 [2023-11-21 19:42:46,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:42:46,932 INFO L225 Difference]: With dead ends: 24 [2023-11-21 19:42:46,932 INFO L226 Difference]: Without dead ends: 15 [2023-11-21 19:42:46,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 19:42:46,940 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:42:46,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:42:46,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-21 19:42:47,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-21 19:42:47,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:42:47,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2023-11-21 19:42:47,013 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2023-11-21 19:42:47,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:42:47,014 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2023-11-21 19:42:47,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2023-11-21 19:42:47,015 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2023-11-21 19:42:47,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 19:42:47,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:42:47,017 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:42:47,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 19:42:47,017 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:42:47,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:42:47,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1911288891, now seen corresponding path program 1 times [2023-11-21 19:42:47,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:42:47,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648575865] [2023-11-21 19:42:47,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:42:47,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:42:47,056 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:42:47,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [145626669] [2023-11-21 19:42:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:42:47,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:42:47,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:42:47,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:42:47,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 19:42:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:42:47,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 19:42:47,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:42:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:42:47,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:42:47,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:42:47,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648575865] [2023-11-21 19:42:47,294 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:42:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145626669] [2023-11-21 19:42:47,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145626669] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:42:47,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:42:47,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 19:42:47,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305157972] [2023-11-21 19:42:47,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:42:47,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 19:42:47,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:42:47,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 19:42:47,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 19:42:47,300 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:42:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:42:47,343 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2023-11-21 19:42:47,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 19:42:47,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-11-21 19:42:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:42:47,345 INFO L225 Difference]: With dead ends: 19 [2023-11-21 19:42:47,346 INFO L226 Difference]: Without dead ends: 16 [2023-11-21 19:42:47,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:42:47,348 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 19:42:47,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 19:42:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-21 19:42:47,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-21 19:42:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:42:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2023-11-21 19:42:47,360 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 16 [2023-11-21 19:42:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:42:47,362 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2023-11-21 19:42:47,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:42:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2023-11-21 19:42:47,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-21 19:42:47,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:42:47,366 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:42:47,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 19:42:47,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:42:47,587 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:42:47,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:42:47,588 INFO L85 PathProgramCache]: Analyzing trace with hash -879762393, now seen corresponding path program 1 times [2023-11-21 19:42:47,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:42:47,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849145941] [2023-11-21 19:42:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:42:47,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:42:47,620 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:42:47,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676110661] [2023-11-21 19:42:47,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:42:47,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:42:47,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:42:47,639 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:42:47,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 19:42:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:42:47,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 19:42:47,779 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:42:47,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:42:47,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 19:42:47,854 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:42:47,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849145941] [2023-11-21 19:42:47,856 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:42:47,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676110661] [2023-11-21 19:42:47,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676110661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 19:42:47,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 19:42:47,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 19:42:47,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148378235] [2023-11-21 19:42:47,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 19:42:47,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 19:42:47,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:42:47,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 19:42:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 19:42:47,866 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:42:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:42:47,962 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2023-11-21 19:42:47,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 19:42:47,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2023-11-21 19:42:47,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:42:47,965 INFO L225 Difference]: With dead ends: 29 [2023-11-21 19:42:47,965 INFO L226 Difference]: Without dead ends: 17 [2023-11-21 19:42:47,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 19:42:47,968 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:42:47,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:42:47,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-11-21 19:42:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-11-21 19:42:47,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:42:47,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2023-11-21 19:42:47,976 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 17 [2023-11-21 19:42:47,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:42:47,977 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2023-11-21 19:42:47,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:42:47,978 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2023-11-21 19:42:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-21 19:42:47,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:42:47,979 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:42:48,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 19:42:48,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:42:48,204 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:42:48,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:42:48,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1196546793, now seen corresponding path program 1 times [2023-11-21 19:42:48,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:42:48,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174772098] [2023-11-21 19:42:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:42:48,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:42:48,267 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:42:48,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305562668] [2023-11-21 19:42:48,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:42:48,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:42:48,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:42:48,274 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:42:48,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 19:42:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:42:48,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-21 19:42:48,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:42:48,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-21 19:42:48,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-21 19:42:49,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:42:49,272 INFO L349 Elim1Store]: treesize reduction 100, result has 13.0 percent of original size [2023-11-21 19:42:49,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 41 [2023-11-21 19:42:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:42:49,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:42:56,782 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse11 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse7 (* .cse11 4)) (.cse8 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (and (forall ((v_z_1 Int)) (let ((.cse10 (+ .cse11 v_z_1))) (or (forall ((v_y_1 Int)) (let ((.cse0 (* 4294967295 v_z_1)) (.cse1 (* v_y_1 4294967296))) (let ((.cse2 (+ .cse0 .cse1))) (or (< c_~ARR_SIZE~0 (+ .cse0 .cse1 1)) (< .cse2 0) (= (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse9 (+ (* 17179869180 v_z_1) (* 17179869184 v_y_1) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse8 .cse9 (+ (* .cse2 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse8 .cse9))))))) (let ((.cse4 (let ((.cse5 (select .cse3 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse6 (+ (* v_z_1 4) (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7))) (store .cse5 .cse6 (+ (* .cse2 |c_ULTIMATE.start_main_~num~0#1|) (select .cse5 .cse6)))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse3 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse4) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))) 0))))) (< v_z_1 0) (< .cse10 2147483648) (< 4294967295 .cse10)))) (forall ((v_z_1 Int)) (or (< (+ .cse11 v_z_1) 6442450944) (forall ((v_y_1 Int)) (let ((.cse12 (* 4294967295 v_z_1)) (.cse13 (* v_y_1 4294967296))) (let ((.cse14 (+ .cse12 .cse13))) (or (< c_~ARR_SIZE~0 (+ .cse12 .cse13 1)) (< .cse14 0) (= (let ((.cse15 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse19 (+ (* 17179869180 v_z_1) (* 17179869184 v_y_1) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse8 .cse19 (+ (* .cse14 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse8 .cse19))))))) (let ((.cse16 (let ((.cse17 (select .cse15 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse18 (+ (* v_z_1 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 (- 34359738368)))) (store .cse17 .cse18 (+ (* .cse14 |c_ULTIMATE.start_main_~num~0#1|) (select .cse17 .cse18)))))) (+ (select (select (store .cse15 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse16) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse16 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|))) 0))))) (< 4294967295 v_z_1))) (forall ((v_z_3 Int)) (let ((.cse20 (+ .cse11 v_z_3))) (or (< .cse20 4294967296) (< 4294967295 v_z_3) (< 6442450943 .cse20) (forall ((v_y_3 Int)) (let ((.cse27 (* 4294967295 v_z_3)) (.cse28 (* v_y_3 4294967296))) (let ((.cse25 (+ .cse27 .cse28))) (or (= (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse26 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_3) (* 17179869184 v_y_3)))) (store .cse8 .cse26 (+ (* .cse25 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse8 .cse26))))))) (let ((.cse21 (let ((.cse23 (select .cse22 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse24 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 (* v_z_3 4)))) (store .cse23 .cse24 (+ (select .cse23 .cse24) (* .cse25 |c_ULTIMATE.start_main_~num~0#1|)))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse21 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select (select (store .cse22 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse21) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) 0) (< c_~ARR_SIZE~0 (+ .cse27 .cse28 1)) (< .cse25 0)))))))) (forall ((v_z_1 Int)) (let ((.cse41 (+ .cse11 v_z_1))) (or (forall ((v_y_1 Int)) (let ((.cse29 (* 4294967295 v_z_1)) (.cse30 (* v_y_1 4294967296))) (let ((.cse31 (+ .cse29 .cse30))) (let ((.cse32 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse40 (+ (* 17179869180 v_z_1) (* 17179869184 v_y_1) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse8 .cse40 (+ (* .cse31 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse8 .cse40))))))) (let ((.cse36 (* .cse31 |c_ULTIMATE.start_main_~num~0#1|)) (.cse34 (select .cse32 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse37 (* v_z_1 4))) (or (< c_~ARR_SIZE~0 (+ .cse29 .cse30 1)) (< .cse31 0) (= (let ((.cse33 (let ((.cse35 (+ .cse37 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 (- 34359738368)))) (store .cse34 .cse35 (+ .cse36 (select .cse34 .cse35)))))) (+ (select (select (store .cse32 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse33) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse33 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|)) 0) (= (let ((.cse38 (let ((.cse39 (+ .cse37 (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7))) (store .cse34 .cse39 (+ .cse36 (select .cse34 .cse39)))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse32 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse38) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse38 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0))))))) (< v_z_1 0) (< .cse41 2147483648) (< 4294967295 .cse41)))) (forall ((v_z_3 Int)) (or (forall ((v_y_3 Int)) (let ((.cse42 (* 4294967295 v_z_3)) (.cse43 (* v_y_3 4294967296))) (let ((.cse44 (+ .cse42 .cse43))) (or (< c_~ARR_SIZE~0 (+ .cse42 .cse43 1)) (< .cse44 0) (= 0 (let ((.cse45 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse49 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_3) (* 17179869184 v_y_3)))) (store .cse8 .cse49 (+ (* .cse44 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse8 .cse49))))))) (let ((.cse46 (let ((.cse47 (select .cse45 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse48 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 (* v_z_3 4)))) (store .cse47 .cse48 (+ (select .cse47 .cse48) (* .cse44 |c_ULTIMATE.start_main_~num~0#1|)))))) (+ (select (select (store .cse45 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse46) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse46 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))))))) (< 2147483647 (+ .cse11 v_z_3)) (< v_z_3 0))) (forall ((v_z_3 Int)) (or (forall ((v_y_3 Int)) (let ((.cse56 (* 4294967295 v_z_3)) (.cse57 (* v_y_3 4294967296))) (let ((.cse58 (+ .cse56 .cse57))) (let ((.cse51 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse61 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_3) (* 17179869184 v_y_3)))) (store .cse8 .cse61 (+ (* .cse58 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse8 .cse61))))))) (let ((.cse52 (select .cse51 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse54 (* .cse58 |c_ULTIMATE.start_main_~num~0#1|)) (.cse55 (* v_z_3 4))) (or (= (let ((.cse50 (let ((.cse53 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 .cse55))) (store .cse52 .cse53 (+ (select .cse52 .cse53) .cse54))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse50 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select (select (store .cse51 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse50) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0) (< c_~ARR_SIZE~0 (+ .cse56 .cse57 1)) (< .cse58 0) (= 0 (let ((.cse59 (let ((.cse60 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 .cse55))) (store .cse52 .cse60 (+ (select .cse52 .cse60) .cse54))))) (+ (select (select (store .cse51 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse59) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse59 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))))))))) (< 2147483647 (+ .cse11 v_z_3)) (< v_z_3 0))) (forall ((v_z_3 Int)) (let ((.cse62 (+ .cse11 v_z_3))) (or (< .cse62 4294967296) (< 4294967295 v_z_3) (forall ((v_y_3 Int)) (let ((.cse69 (* 4294967295 v_z_3)) (.cse70 (* v_y_3 4294967296))) (let ((.cse71 (+ .cse69 .cse70))) (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse74 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_3) (* 17179869184 v_y_3)))) (store .cse8 .cse74 (+ (* .cse71 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse8 .cse74))))))) (let ((.cse65 (select .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse67 (* .cse71 |c_ULTIMATE.start_main_~num~0#1|)) (.cse68 (* v_z_3 4))) (or (= (let ((.cse63 (let ((.cse66 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 .cse68))) (store .cse65 .cse66 (+ (select .cse65 .cse66) .cse67))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse63 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select (select (store .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse63) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) 0) (< c_~ARR_SIZE~0 (+ .cse69 .cse70 1)) (< .cse71 0) (= 0 (let ((.cse72 (let ((.cse73 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 .cse68))) (store .cse65 .cse73 (+ (select .cse65 .cse73) .cse67))))) (+ (select (select (store .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse72) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse72 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))))))))) (< 6442450943 .cse62)))) (forall ((v_z_1 Int)) (or (forall ((v_y_1 Int)) (let ((.cse75 (* 4294967295 v_z_1)) (.cse76 (* v_y_1 4294967296))) (let ((.cse77 (+ .cse75 .cse76))) (let ((.cse78 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse86 (+ (* 17179869180 v_z_1) (* 17179869184 v_y_1) |c_ULTIMATE.start_main_~#array1~0#1.offset|))) (store .cse8 .cse86 (+ (* .cse77 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse8 .cse86))))))) (let ((.cse82 (* .cse77 |c_ULTIMATE.start_main_~num~0#1|)) (.cse80 (select .cse78 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse83 (* v_z_1 4))) (or (< c_~ARR_SIZE~0 (+ .cse75 .cse76 1)) (< .cse77 0) (= (let ((.cse79 (let ((.cse81 (+ .cse83 |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7 (- 34359738368)))) (store .cse80 .cse81 (+ .cse82 (select .cse80 .cse81)))))) (+ (select (select (store .cse78 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse79) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse79 |c_ULTIMATE.start_main_~#array2~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1|)) 0) (= (let ((.cse84 (let ((.cse85 (+ .cse83 (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse7))) (store .cse80 .cse85 (+ .cse82 (select .cse80 .cse85)))))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select (select (store .cse78 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse84) |c_ULTIMATE.start_main_~#array1~0#1.base|) |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse84 |c_ULTIMATE.start_main_~#array2~0#1.offset|))) 0))))))) (< (+ .cse11 v_z_1) 6442450944) (< 4294967295 v_z_1)))))) is different from true [2023-11-21 19:42:56,792 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:42:56,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174772098] [2023-11-21 19:42:56,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:42:56,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305562668] [2023-11-21 19:42:56,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305562668] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:42:56,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [309138286] [2023-11-21 19:42:56,819 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-21 19:42:56,820 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:42:56,824 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:42:56,830 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:42:56,831 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:42:57,421 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-11-21 19:42:57,430 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:42:59,040 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '392#(and (<= |ULTIMATE.start_main_~index~0#1| 32766) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~index~0#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (not (= |ULTIMATE.start_main_~sum~0#1| 0)) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0))' at error location [2023-11-21 19:42:59,040 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:42:59,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:42:59,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-21 19:42:59,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998127731] [2023-11-21 19:42:59,041 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-21 19:42:59,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 19:42:59,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:42:59,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 19:42:59,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=754, Unknown=1, NotChecked=56, Total=930 [2023-11-21 19:42:59,044 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:42:59,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:42:59,745 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2023-11-21 19:42:59,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 19:42:59,745 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-21 19:42:59,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:42:59,747 INFO L225 Difference]: With dead ends: 40 [2023-11-21 19:42:59,747 INFO L226 Difference]: Without dead ends: 37 [2023-11-21 19:42:59,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=208, Invalid=1127, Unknown=1, NotChecked=70, Total=1406 [2023-11-21 19:42:59,749 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 47 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 19:42:59,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 62 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 19:42:59,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-21 19:42:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2023-11-21 19:42:59,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:42:59,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-11-21 19:42:59,765 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 18 [2023-11-21 19:42:59,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:42:59,766 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-11-21 19:42:59,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:42:59,767 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-11-21 19:42:59,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 19:42:59,767 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:42:59,768 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:42:59,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 19:42:59,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:42:59,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:42:59,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:42:59,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1561930951, now seen corresponding path program 2 times [2023-11-21 19:42:59,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:42:59,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113295369] [2023-11-21 19:42:59,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:42:59,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:43:00,021 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:43:00,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696374234] [2023-11-21 19:43:00,024 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 19:43:00,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:43:00,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:43:00,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:43:00,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 19:43:00,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-21 19:43:00,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:43:00,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 19:43:00,111 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:43:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:43:00,184 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:43:00,244 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:43:00,245 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:43:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113295369] [2023-11-21 19:43:00,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:43:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696374234] [2023-11-21 19:43:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696374234] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:43:00,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1105037634] [2023-11-21 19:43:00,248 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-21 19:43:00,249 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:43:00,249 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:43:00,249 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:43:00,250 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:43:00,752 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-11-21 19:43:00,753 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:43:02,010 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '636#(and (<= |ULTIMATE.start_main_~index~0#1| 32766) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~index~0#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (not (= |ULTIMATE.start_main_~sum~0#1| 0)) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0))' at error location [2023-11-21 19:43:02,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:43:02,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 19:43:02,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-21 19:43:02,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804933845] [2023-11-21 19:43:02,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 19:43:02,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 19:43:02,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:43:02,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 19:43:02,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=347, Unknown=4, NotChecked=0, Total=420 [2023-11-21 19:43:02,013 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:43:02,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:43:02,168 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2023-11-21 19:43:02,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 19:43:02,168 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-11-21 19:43:02,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:43:02,169 INFO L225 Difference]: With dead ends: 37 [2023-11-21 19:43:02,170 INFO L226 Difference]: Without dead ends: 24 [2023-11-21 19:43:02,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=91, Invalid=457, Unknown=4, NotChecked=0, Total=552 [2023-11-21 19:43:02,172 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:43:02,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 44 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:43:02,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-21 19:43:02,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2023-11-21 19:43:02,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:43:02,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-11-21 19:43:02,180 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 19 [2023-11-21 19:43:02,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:43:02,181 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-11-21 19:43:02,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:43:02,181 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-11-21 19:43:02,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-21 19:43:02,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:43:02,182 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:43:02,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 19:43:02,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:43:02,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:43:02,397 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:43:02,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1137622119, now seen corresponding path program 3 times [2023-11-21 19:43:02,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:43:02,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549943416] [2023-11-21 19:43:02,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:43:02,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:43:02,433 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:43:02,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226703002] [2023-11-21 19:43:02,445 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 19:43:02,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:43:02,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:43:02,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:43:02,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 19:43:02,528 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 19:43:02,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:43:02,529 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 19:43:02,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:43:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:43:02,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:43:02,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:43:02,664 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:43:02,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549943416] [2023-11-21 19:43:02,664 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:43:02,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226703002] [2023-11-21 19:43:02,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226703002] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:43:02,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [798436192] [2023-11-21 19:43:02,668 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-21 19:43:02,668 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:43:02,668 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:43:02,669 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:43:02,669 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:43:03,167 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-11-21 19:43:03,169 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:43:04,262 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '855#(and (<= |ULTIMATE.start_main_~index~0#1| 32766) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~index~0#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (not (= |ULTIMATE.start_main_~sum~0#1| 0)) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0))' at error location [2023-11-21 19:43:04,263 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:43:04,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 19:43:04,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2023-11-21 19:43:04,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866376408] [2023-11-21 19:43:04,264 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 19:43:04,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 19:43:04,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:43:04,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 19:43:04,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=339, Unknown=4, NotChecked=0, Total=420 [2023-11-21 19:43:04,266 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:43:04,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:43:04,391 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-11-21 19:43:04,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 19:43:04,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-11-21 19:43:04,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:43:04,393 INFO L225 Difference]: With dead ends: 24 [2023-11-21 19:43:04,393 INFO L226 Difference]: Without dead ends: 21 [2023-11-21 19:43:04,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=98, Invalid=450, Unknown=4, NotChecked=0, Total=552 [2023-11-21 19:43:04,395 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 19:43:04,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 27 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 19:43:04,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-21 19:43:04,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-21 19:43:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:43:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2023-11-21 19:43:04,402 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 19 [2023-11-21 19:43:04,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:43:04,402 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2023-11-21 19:43:04,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:43:04,403 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2023-11-21 19:43:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 19:43:04,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:43:04,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:43:04,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 19:43:04,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:43:04,610 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:43:04,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:43:04,610 INFO L85 PathProgramCache]: Analyzing trace with hash 906371451, now seen corresponding path program 4 times [2023-11-21 19:43:04,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:43:04,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022982633] [2023-11-21 19:43:04,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:43:04,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:43:04,633 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:43:04,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584310445] [2023-11-21 19:43:04,633 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-21 19:43:04,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:43:04,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:43:04,635 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:43:04,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 19:43:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 19:43:04,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 59 conjunts are in the unsatisfiable core [2023-11-21 19:43:04,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:43:04,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-21 19:43:04,841 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2023-11-21 19:43:04,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2023-11-21 19:43:05,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 19:43:05,705 INFO L349 Elim1Store]: treesize reduction 353, result has 14.1 percent of original size [2023-11-21 19:43:05,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 12 new quantified variables, introduced 38 case distinctions, treesize of input 212 treesize of output 214 [2023-11-21 19:43:05,857 INFO L349 Elim1Store]: treesize reduction 40, result has 46.7 percent of original size [2023-11-21 19:43:05,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 179 treesize of output 184 [2023-11-21 19:43:05,965 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2023-11-21 19:43:05,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 96 treesize of output 157 [2023-11-21 19:43:06,102 INFO L349 Elim1Store]: treesize reduction 95, result has 22.8 percent of original size [2023-11-21 19:43:06,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 70 [2023-11-21 19:43:06,375 INFO L349 Elim1Store]: treesize reduction 75, result has 27.2 percent of original size [2023-11-21 19:43:06,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 41 treesize of output 51 [2023-11-21 19:43:06,616 INFO L349 Elim1Store]: treesize reduction 77, result has 18.9 percent of original size [2023-11-21 19:43:06,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 113 treesize of output 87 [2023-11-21 19:43:07,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 29 [2023-11-21 19:43:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:43:07,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:43:15,024 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse13 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (.cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (.cse8 (* .cse13 4)) (.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (and (forall ((v_z_7 Int)) (or (forall ((v_y_7 Int)) (let ((.cse11 (* v_y_7 4294967296)) (.cse12 (* 4294967295 v_z_7))) (let ((.cse7 (+ .cse11 .cse12))) (or (= 0 (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse10 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_7) (* 17179869184 v_y_7)))) (store .cse9 .cse10 (+ (* .cse7 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse10))))))) (let ((.cse2 (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse6 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse8 (- 34359738368) (* v_z_7 4)))) (store .cse5 .cse6 (+ (select .cse5 .cse6) (* .cse7 |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse0 (select (store .cse4 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse2) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 .cse1) (select .cse2 .cse3) |c_ULTIMATE.start_main_~sum~0#1| (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse2 |c_ULTIMATE.start_main_~#array2~0#1.offset|)))))) (< .cse7 0) (< c_~ARR_SIZE~0 (+ .cse11 .cse12 1)))))) (< (+ .cse13 v_z_7) 6442450944) (< 4294967295 v_z_7))) (forall ((v_z_7 Int)) (or (< (+ .cse13 v_z_7) 6442450944) (forall ((v_y_7 Int)) (let ((.cse25 (* v_y_7 4294967296)) (.cse26 (* 4294967295 v_z_7))) (let ((.cse24 (+ .cse25 .cse26))) (let ((.cse16 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse27 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_7) (* 17179869184 v_y_7)))) (store .cse9 .cse27 (+ (* .cse24 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse27))))))) (let ((.cse17 (select .cse16 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse19 (* .cse24 |c_ULTIMATE.start_main_~num~0#1|)) (.cse20 (* v_z_7 4))) (or (= 0 (let ((.cse15 (let ((.cse18 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse8 (- 34359738368) .cse20))) (store .cse17 .cse18 (+ (select .cse17 .cse18) .cse19))))) (let ((.cse14 (select (store .cse16 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse15) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse14 .cse1) (select .cse15 .cse3) |c_ULTIMATE.start_main_~sum~0#1| (select .cse14 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse15 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) (= (let ((.cse21 (let ((.cse23 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse8 .cse20))) (store .cse17 .cse23 (+ (select .cse17 .cse23) .cse19))))) (let ((.cse22 (select (store .cse16 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse21) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse21 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse21 .cse3) (select .cse22 .cse1) |c_ULTIMATE.start_main_~sum~0#1| (select .cse22 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) 0) (< .cse24 0) (< c_~ARR_SIZE~0 (+ .cse25 .cse26 1)))))))) (< 4294967295 v_z_7))) (forall ((v_z_7 Int)) (let ((.cse28 (+ .cse13 v_z_7))) (or (< 4294967295 .cse28) (< v_z_7 0) (forall ((v_y_7 Int)) (let ((.cse36 (* v_y_7 4294967296)) (.cse37 (* 4294967295 v_z_7))) (let ((.cse34 (+ .cse36 .cse37))) (or (= (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse35 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_7) (* 17179869184 v_y_7)))) (store .cse9 .cse35 (+ (* .cse34 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse35))))))) (let ((.cse29 (let ((.cse32 (select .cse31 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse33 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse8 (* v_z_7 4)))) (store .cse32 .cse33 (+ (select .cse32 .cse33) (* .cse34 |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse30 (select (store .cse31 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse29) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse29 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse29 .cse3) (select .cse30 .cse1) |c_ULTIMATE.start_main_~sum~0#1| (select .cse30 |c_ULTIMATE.start_main_~#array1~0#1.offset|))))) 0) (< .cse34 0) (< c_~ARR_SIZE~0 (+ .cse36 .cse37 1)))))) (< .cse28 2147483648)))) (forall ((v_z_9 Int)) (or (< v_z_9 0) (< 2147483647 (+ .cse13 v_z_9)) (forall ((v_y_9 Int)) (let ((.cse49 (* v_y_9 4294967296)) (.cse50 (* 4294967295 v_z_9))) (let ((.cse48 (+ .cse49 .cse50))) (let ((.cse40 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse51 (+ (* 17179869184 v_y_9) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_9)))) (store .cse9 .cse51 (+ (select .cse9 .cse51) (* .cse48 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (let ((.cse41 (select .cse40 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse43 (* .cse48 |c_ULTIMATE.start_main_~num~0#1|)) (.cse44 (* v_z_9 4))) (or (= (let ((.cse38 (let ((.cse42 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse44 .cse8))) (store .cse41 .cse42 (+ (select .cse41 .cse42) .cse43))))) (let ((.cse39 (select (store .cse40 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse38) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse38 .cse3) (select .cse39 .cse1) (select .cse38 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse39 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) 0) (= (let ((.cse46 (let ((.cse47 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse44 .cse8))) (store .cse41 .cse47 (+ (select .cse41 .cse47) .cse43))))) (let ((.cse45 (select (store .cse40 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse46) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse45 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse46 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse45 .cse1) (select .cse46 .cse3)))) 0) (< .cse48 0) (< c_~ARR_SIZE~0 (+ .cse49 1 .cse50)))))))))) (forall ((v_z_9 Int)) (let ((.cse52 (+ .cse13 v_z_9))) (or (< .cse52 4294967296) (< 6442450943 .cse52) (< 4294967295 v_z_9) (forall ((v_y_9 Int)) (let ((.cse60 (* v_y_9 4294967296)) (.cse61 (* 4294967295 v_z_9))) (let ((.cse58 (+ .cse60 .cse61))) (or (= (let ((.cse55 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse59 (+ (* 17179869184 v_y_9) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_9)))) (store .cse9 .cse59 (+ (select .cse9 .cse59) (* .cse58 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (let ((.cse53 (let ((.cse56 (select .cse55 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse57 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| (* v_z_9 4) .cse8))) (store .cse56 .cse57 (+ (select .cse56 .cse57) (* .cse58 |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse54 (select (store .cse55 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse53) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse53 .cse3) (select .cse54 .cse1) (select .cse53 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse54 |c_ULTIMATE.start_main_~#array1~0#1.offset|))))) 0) (< .cse58 0) (< c_~ARR_SIZE~0 (+ .cse60 1 .cse61))))))))) (forall ((v_z_9 Int)) (or (< v_z_9 0) (< 2147483647 (+ .cse13 v_z_9)) (forall ((v_y_9 Int)) (let ((.cse69 (* v_y_9 4294967296)) (.cse70 (* 4294967295 v_z_9))) (let ((.cse67 (+ .cse69 .cse70))) (or (= (let ((.cse64 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse68 (+ (* 17179869184 v_y_9) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_9)))) (store .cse9 .cse68 (+ (select .cse9 .cse68) (* .cse67 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (let ((.cse63 (let ((.cse65 (select .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse66 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| (* v_z_9 4) .cse8))) (store .cse65 .cse66 (+ (select .cse65 .cse66) (* .cse67 |c_ULTIMATE.start_main_~num~0#1|)))))) (let ((.cse62 (select (store .cse64 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse63) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse62 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse63 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse62 .cse1) (select .cse63 .cse3))))) 0) (< .cse67 0) (< c_~ARR_SIZE~0 (+ .cse69 1 .cse70)))))))) (forall ((v_z_9 Int)) (let ((.cse71 (+ .cse13 v_z_9))) (or (< .cse71 4294967296) (forall ((v_y_9 Int)) (let ((.cse83 (* v_y_9 4294967296)) (.cse84 (* 4294967295 v_z_9))) (let ((.cse82 (+ .cse83 .cse84))) (let ((.cse74 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse85 (+ (* 17179869184 v_y_9) |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_9)))) (store .cse9 .cse85 (+ (select .cse9 .cse85) (* .cse82 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|))))))) (let ((.cse75 (select .cse74 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse77 (* .cse82 |c_ULTIMATE.start_main_~num~0#1|)) (.cse78 (* v_z_9 4))) (or (= (let ((.cse72 (let ((.cse76 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse78 .cse8))) (store .cse75 .cse76 (+ (select .cse75 .cse76) .cse77))))) (let ((.cse73 (select (store .cse74 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse72) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse72 .cse3) (select .cse73 .cse1) (select .cse72 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse73 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) 0) (= (let ((.cse80 (let ((.cse81 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse78 .cse8))) (store .cse75 .cse81 (+ (select .cse75 .cse81) .cse77))))) (let ((.cse79 (select (store .cse74 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse80) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ |c_ULTIMATE.start_main_~sum~0#1| (select .cse79 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse80 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse79 .cse1) (select .cse80 .cse3)))) 0) (< .cse82 0) (< c_~ARR_SIZE~0 (+ .cse83 1 .cse84)))))))) (< 6442450943 .cse71) (< 4294967295 v_z_9)))) (forall ((v_z_7 Int)) (let ((.cse86 (+ .cse13 v_z_7))) (or (< 4294967295 .cse86) (< v_z_7 0) (forall ((v_y_7 Int)) (let ((.cse98 (* v_y_7 4294967296)) (.cse99 (* 4294967295 v_z_7))) (let ((.cse97 (+ .cse98 .cse99))) (let ((.cse89 (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse100 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (* 17179869180 v_z_7) (* 17179869184 v_y_7)))) (store .cse9 .cse100 (+ (* .cse97 |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|) (select .cse9 .cse100))))))) (let ((.cse90 (select .cse89 |c_ULTIMATE.start_main_~#array2~0#1.base|)) (.cse92 (* .cse97 |c_ULTIMATE.start_main_~num~0#1|)) (.cse93 (* v_z_7 4))) (or (= 0 (let ((.cse88 (let ((.cse91 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse8 (- 34359738368) .cse93))) (store .cse90 .cse91 (+ (select .cse90 .cse91) .cse92))))) (let ((.cse87 (select (store .cse89 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse88) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse87 .cse1) (select .cse88 .cse3) |c_ULTIMATE.start_main_~sum~0#1| (select .cse87 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse88 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) (= (let ((.cse94 (let ((.cse96 (+ (- 17179869184) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse8 .cse93))) (store .cse90 .cse96 (+ (select .cse90 .cse96) .cse92))))) (let ((.cse95 (select (store .cse89 |c_ULTIMATE.start_main_~#array2~0#1.base| .cse94) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse94 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse94 .cse3) (select .cse95 .cse1) |c_ULTIMATE.start_main_~sum~0#1| (select .cse95 |c_ULTIMATE.start_main_~#array1~0#1.offset|)))) 0) (< .cse97 0) (< c_~ARR_SIZE~0 (+ .cse98 .cse99 1)))))))) (< .cse86 2147483648))))))) is different from true [2023-11-21 19:43:15,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:43:15,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022982633] [2023-11-21 19:43:15,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:43:15,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584310445] [2023-11-21 19:43:15,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584310445] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 19:43:15,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [474569170] [2023-11-21 19:43:15,033 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-21 19:43:15,033 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:43:15,034 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:43:15,034 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:43:15,034 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:43:15,491 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-11-21 19:43:15,493 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:43:31,114 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1048#(and (<= |ULTIMATE.start_main_~index~0#1| 32766) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~index~0#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (not (= |ULTIMATE.start_main_~sum~0#1| 0)) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0))' at error location [2023-11-21 19:43:31,114 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:43:31,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-21 19:43:31,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-11-21 19:43:31,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804006748] [2023-11-21 19:43:31,115 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-21 19:43:31,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-21 19:43:31,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:43:31,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-21 19:43:31,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1026, Unknown=9, NotChecked=66, Total=1260 [2023-11-21 19:43:31,117 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 18 states, 16 states have (on average 1.0) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:43:33,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:43:33,753 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2023-11-21 19:43:33,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 19:43:33,753 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.0) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2023-11-21 19:43:33,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:43:33,754 INFO L225 Difference]: With dead ends: 39 [2023-11-21 19:43:33,754 INFO L226 Difference]: Without dead ends: 36 [2023-11-21 19:43:33,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=252, Invalid=1549, Unknown=9, NotChecked=82, Total=1892 [2023-11-21 19:43:33,756 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 19:43:33,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 53 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 19:43:33,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-11-21 19:43:33,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2023-11-21 19:43:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 19:43:33,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2023-11-21 19:43:33,768 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2023-11-21 19:43:33,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:43:33,768 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2023-11-21 19:43:33,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.0) internal successors, (16), 14 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 19:43:33,768 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2023-11-21 19:43:33,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 19:43:33,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:43:33,769 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:43:33,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 19:43:33,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:43:33,974 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:43:33,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:43:33,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1967431961, now seen corresponding path program 5 times [2023-11-21 19:43:33,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:43:33,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870827104] [2023-11-21 19:43:33,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:43:33,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:43:34,004 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:43:34,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1136085711] [2023-11-21 19:43:34,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 19:43:34,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:43:34,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:43:34,034 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:43:34,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 19:43:34,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-21 19:43:34,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:43:34,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:43:34,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:43:34,587 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:43:34,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:43:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:43:34,964 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:43:34,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870827104] [2023-11-21 19:43:34,964 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:43:34,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136085711] [2023-11-21 19:43:34,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136085711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:43:34,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [95707067] [2023-11-21 19:43:34,968 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-21 19:43:34,968 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:43:34,968 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:43:34,969 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:43:34,969 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:43:35,364 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-11-21 19:43:35,370 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-21 19:43:38,811 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1314#(and (<= |ULTIMATE.start_main_~index~0#1| 32766) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= 1 |#StackHeapBarrier|) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~index~0#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~count~0#1|) (<= 2 |ULTIMATE.start_main_~#array1~0#1.base|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (not (= |ULTIMATE.start_main_~sum~0#1| 0)) (<= 2 |ULTIMATE.start_main_~#array2~0#1.base|) (= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| 0) (<= ~ARR_SIZE~0 32767) (<= 1 ~ARR_SIZE~0))' at error location [2023-11-21 19:43:38,811 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-11-21 19:43:38,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 19:43:38,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2023-11-21 19:43:38,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094434416] [2023-11-21 19:43:38,812 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 19:43:38,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 19:43:38,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-21 19:43:38,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 19:43:38,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=463, Unknown=0, NotChecked=0, Total=552 [2023-11-21 19:43:38,814 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:43:39,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 19:43:39,548 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2023-11-21 19:43:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 19:43:39,548 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-21 19:43:39,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 19:43:39,549 INFO L225 Difference]: With dead ends: 53 [2023-11-21 19:43:39,550 INFO L226 Difference]: Without dead ends: 45 [2023-11-21 19:43:39,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2023-11-21 19:43:39,551 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 19:43:39,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 47 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 19:43:39,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-21 19:43:39,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2023-11-21 19:43:39,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 19:43:39,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2023-11-21 19:43:39,569 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 21 [2023-11-21 19:43:39,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 19:43:39,570 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2023-11-21 19:43:39,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 19:43:39,570 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2023-11-21 19:43:39,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 19:43:39,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 19:43:39,571 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 19:43:39,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 19:43:39,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:43:39,786 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 19:43:39,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 19:43:39,786 INFO L85 PathProgramCache]: Analyzing trace with hash 114334585, now seen corresponding path program 6 times [2023-11-21 19:43:39,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-21 19:43:39,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614874699] [2023-11-21 19:43:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 19:43:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 19:43:39,807 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-21 19:43:39,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1140055175] [2023-11-21 19:43:39,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 19:43:39,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 19:43:39,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 [2023-11-21 19:43:39,809 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 19:43:39,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec7d7ead-3465-4421-9647-110f9e7277c9/bin/utaipan-verify-QoSU8krkJ5/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 19:43:39,914 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 19:43:39,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 19:43:39,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 19:43:39,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 19:43:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 19:43:40,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 19:43:40,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 19:43:40,832 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-21 19:43:40,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614874699] [2023-11-21 19:43:40,833 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-21 19:43:40,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140055175] [2023-11-21 19:43:40,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140055175] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 19:43:40,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1365751064] [2023-11-21 19:43:40,835 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2023-11-21 19:43:40,836 INFO L166 IcfgInterpreter]: Building call graph [2023-11-21 19:43:40,836 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-21 19:43:40,836 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-21 19:43:40,836 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-21 19:43:41,308 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 1 for LOIs [2023-11-21 19:43:41,313 INFO L180 IcfgInterpreter]: Interpretation finished