./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh --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 be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:20:40,177 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:20:40,247 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-12-02 16:20:40,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:20:40,252 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:20:40,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:20:40,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:20:40,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:20:40,279 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:20:40,279 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:20:40,280 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:20:40,280 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:20:40,281 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:20:40,281 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:20:40,282 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:20:40,283 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:20:40,283 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:20:40,284 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:20:40,284 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:20:40,285 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:20:40,286 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:20:40,286 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:20:40,287 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:20:40,288 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:20:40,288 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:20:40,288 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:20:40,289 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:20:40,289 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:20:40,290 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:20:40,290 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:20:40,291 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:20:40,291 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:20:40,291 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:20:40,292 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:20:40,292 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:20:40,292 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 16:20:40,292 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:20:40,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:20:40,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:20:40,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:20:40,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:20:40,293 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:20:40,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:20:40,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:20:40,294 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:20:40,294 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:20:40,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:20:40,295 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_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2023-12-02 16:20:40,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:20:40,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:20:40,555 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:20:40,557 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:20:40,557 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:20:40,558 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2023-12-02 16:20:43,364 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:20:43,695 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:20:43,696 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i [2023-12-02 16:20:43,718 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/data/b0275e4d6/df86f0bd17d24fe5983596bca6c9fecc/FLAG311520211 [2023-12-02 16:20:43,732 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/data/b0275e4d6/df86f0bd17d24fe5983596bca6c9fecc [2023-12-02 16:20:43,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:20:43,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:20:43,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:20:43,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:20:43,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:20:43,743 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:20:43" (1/1) ... [2023-12-02 16:20:43,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3345fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:43, skipping insertion in model container [2023-12-02 16:20:43,745 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:20:43" (1/1) ... [2023-12-02 16:20:43,810 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:20:44,178 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_1b29b1c6-9160-436e-86c9-3577421701be/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i[33519,33532] [2023-12-02 16:20:44,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:20:44,318 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:20:44,354 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_1b29b1c6-9160-436e-86c9-3577421701be/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_nondet_test3-2.i[33519,33532] [2023-12-02 16:20:44,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:20:44,446 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:20:44,454 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:20:44,454 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44 WrapperNode [2023-12-02 16:20:44,454 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:20:44,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:20:44,456 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:20:44,456 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:20:44,462 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,564 INFO L138 Inliner]: procedures = 177, calls = 332, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1502 [2023-12-02 16:20:44,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:20:44,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:20:44,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:20:44,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:20:44,573 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,574 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,587 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,588 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,679 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,710 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:20:44,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:20:44,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:20:44,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:20:44,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (1/1) ... [2023-12-02 16:20:44,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:20:44,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:20:44,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:20:44,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:20:44,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:20:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 16:20:44,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 16:20:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:20:44,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 16:20:44,794 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 16:20:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:20:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:20:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 16:20:44,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:20:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 16:20:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 16:20:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:20:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:20:44,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:20:44,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:20:45,047 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:20:45,050 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:20:47,913 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:20:49,370 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:20:49,370 INFO L309 CfgBuilder]: Removed 72 assume(true) statements. [2023-12-02 16:20:49,372 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:20:49 BoogieIcfgContainer [2023-12-02 16:20:49,372 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:20:49,375 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:20:49,375 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:20:49,379 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:20:49,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:20:43" (1/3) ... [2023-12-02 16:20:49,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50901333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:20:49, skipping insertion in model container [2023-12-02 16:20:49,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:20:44" (2/3) ... [2023-12-02 16:20:49,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50901333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:20:49, skipping insertion in model container [2023-12-02 16:20:49,381 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:20:49" (3/3) ... [2023-12-02 16:20:49,382 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_nondet_test3-2.i [2023-12-02 16:20:49,404 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:20:49,404 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 16:20:49,460 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:20:49,468 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;@6aa34ca8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:20:49,468 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 16:20:49,473 INFO L276 IsEmpty]: Start isEmpty. Operand has 138 states, 129 states have (on average 1.7286821705426356) internal successors, (223), 131 states have internal predecessors, (223), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 16:20:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-12-02 16:20:49,483 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:20:49,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:20:49,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:20:49,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:20:49,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2105579821, now seen corresponding path program 1 times [2023-12-02 16:20:49,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:20:49,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250075494] [2023-12-02 16:20:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:49,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:20:49,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:20:49,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:20:49,703 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:20:49,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250075494] [2023-12-02 16:20:49,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250075494] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:20:49,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:20:49,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:20:49,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336216445] [2023-12-02 16:20:49,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:20:49,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 16:20:49,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:20:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 16:20:49,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:20:49,747 INFO L87 Difference]: Start difference. First operand has 138 states, 129 states have (on average 1.7286821705426356) internal successors, (223), 131 states have internal predecessors, (223), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:20:51,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:20:53,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:20:55,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:20:57,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:20:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:20:58,952 INFO L93 Difference]: Finished difference Result 274 states and 465 transitions. [2023-12-02 16:20:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 16:20:58,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-12-02 16:20:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:20:58,972 INFO L225 Difference]: With dead ends: 274 [2023-12-02 16:20:58,972 INFO L226 Difference]: Without dead ends: 121 [2023-12-02 16:20:58,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 16:20:58,979 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:20:58,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 129 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 4 Unknown, 0 Unchecked, 9.2s Time] [2023-12-02 16:20:59,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-02 16:20:59,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-12-02 16:20:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 113 states have (on average 1.168141592920354) internal successors, (132), 114 states have internal predecessors, (132), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-12-02 16:20:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 142 transitions. [2023-12-02 16:20:59,033 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 142 transitions. Word has length 11 [2023-12-02 16:20:59,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:20:59,033 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 142 transitions. [2023-12-02 16:20:59,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:20:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 142 transitions. [2023-12-02 16:20:59,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 16:20:59,035 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:20:59,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:20:59,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:20:59,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:20:59,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:20:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 642863336, now seen corresponding path program 1 times [2023-12-02 16:20:59,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:20:59,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22196433] [2023-12-02 16:20:59,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:20:59,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:20:59,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:20:59,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:20:59,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:20:59,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22196433] [2023-12-02 16:20:59,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22196433] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:20:59,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:20:59,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 16:20:59,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963016354] [2023-12-02 16:20:59,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:20:59,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:20:59,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:20:59,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:20:59,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:20:59,222 INFO L87 Difference]: Start difference. First operand 121 states and 142 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:21:01,277 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:03,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:05,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:07,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:09,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:11,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:13,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:15,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:17,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:19,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:21,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:23,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:25,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:27,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:29,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:31,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:33,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:35,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:37,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:39,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:41,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:21:41,849 INFO L93 Difference]: Finished difference Result 294 states and 346 transitions. [2023-12-02 16:21:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 16:21:41,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-12-02 16:21:41,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:21:41,859 INFO L225 Difference]: With dead ends: 294 [2023-12-02 16:21:41,860 INFO L226 Difference]: Without dead ends: 173 [2023-12-02 16:21:41,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:21:41,862 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 58 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 6 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.6s IncrementalHoareTripleChecker+Time [2023-12-02 16:21:41,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 301 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 100 Invalid, 20 Unknown, 0 Unchecked, 42.6s Time] [2023-12-02 16:21:41,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-12-02 16:21:41,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2023-12-02 16:21:41,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 163 states have (on average 1.1533742331288344) internal successors, (188), 165 states have internal predecessors, (188), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 16:21:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 200 transitions. [2023-12-02 16:21:41,885 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 200 transitions. Word has length 13 [2023-12-02 16:21:41,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:21:41,886 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 200 transitions. [2023-12-02 16:21:41,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:21:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 200 transitions. [2023-12-02 16:21:41,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 16:21:41,888 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:21:41,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:21:41,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:21:41,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:21:41,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:21:41,889 INFO L85 PathProgramCache]: Analyzing trace with hash 579900166, now seen corresponding path program 1 times [2023-12-02 16:21:41,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:21:41,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779413609] [2023-12-02 16:21:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:21:41,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:21:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:21:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:21:42,616 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:21:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779413609] [2023-12-02 16:21:42,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779413609] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:21:42,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:21:42,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-02 16:21:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090035231] [2023-12-02 16:21:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:21:42,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 16:21:42,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:21:42,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 16:21:42,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-02 16:21:42,619 INFO L87 Difference]: Start difference. First operand 172 states and 200 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:21:44,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:46,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:48,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:50,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:52,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:54,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:56,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:21:58,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:00,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:02,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:05,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:07,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:09,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:11,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:13,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:15,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:17,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:19,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:21,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:23,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:25,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:27,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:29,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:31,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:33,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:35,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:37,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:39,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:41,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:43,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:45,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:47,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:49,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:51,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:53,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:55,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:57,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:22:59,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:01,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:03,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:05,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:07,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:09,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:11,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:13,578 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 16:23:15,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-12-02 16:23:15,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:15,554 INFO L93 Difference]: Finished difference Result 325 states and 385 transitions. [2023-12-02 16:23:15,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:23:15,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-12-02 16:23:15,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:15,556 INFO L225 Difference]: With dead ends: 325 [2023-12-02 16:23:15,556 INFO L226 Difference]: Without dead ends: 226 [2023-12-02 16:23:15,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:23:15,558 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 70 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 44 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 44 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.9s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:15,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 406 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 44 Unknown, 0 Unchecked, 92.9s Time] [2023-12-02 16:23:15,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-12-02 16:23:15,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 171. [2023-12-02 16:23:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 162 states have (on average 1.1481481481481481) internal successors, (186), 164 states have internal predecessors, (186), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 16:23:15,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 198 transitions. [2023-12-02 16:23:15,576 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 198 transitions. Word has length 26 [2023-12-02 16:23:15,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:15,576 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 198 transitions. [2023-12-02 16:23:15,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 16:23:15,577 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 198 transitions. [2023-12-02 16:23:15,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 16:23:15,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:15,580 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:15,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:23:15,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:15,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:15,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1782816371, now seen corresponding path program 1 times [2023-12-02 16:23:15,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:23:15,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705680026] [2023-12-02 16:23:15,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:15,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:23:15,665 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:23:15,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771779764] [2023-12-02 16:23:15,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:15,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:23:15,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:23:15,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:23:15,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 16:23:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:16,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 16:23:16,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:16,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 16:23:16,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-12-02 16:23:16,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 16:23:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 16:23:16,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:23:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 16:23:16,497 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:23:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705680026] [2023-12-02 16:23:16,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:23:16,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771779764] [2023-12-02 16:23:16,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771779764] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-02 16:23:16,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 16:23:16,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-12-02 16:23:16,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714520091] [2023-12-02 16:23:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:16,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 16:23:16,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:23:16,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 16:23:16,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-12-02 16:23:16,502 INFO L87 Difference]: Start difference. First operand 171 states and 198 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:23:18,549 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:20,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:22,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:24,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:26,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:28,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:30,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:32,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:34,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:36,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:39,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:41,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:43,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:45,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:47,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:49,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:50,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:23:50,738 INFO L93 Difference]: Finished difference Result 232 states and 273 transitions. [2023-12-02 16:23:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:23:50,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2023-12-02 16:23:50,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:23:50,743 INFO L225 Difference]: With dead ends: 232 [2023-12-02 16:23:50,743 INFO L226 Difference]: Without dead ends: 222 [2023-12-02 16:23:50,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-12-02 16:23:50,744 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 186 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.2s IncrementalHoareTripleChecker+Time [2023-12-02 16:23:50,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 285 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 16 Unknown, 0 Unchecked, 34.2s Time] [2023-12-02 16:23:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2023-12-02 16:23:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 173. [2023-12-02 16:23:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 164 states have (on average 1.146341463414634) internal successors, (188), 166 states have internal predecessors, (188), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-12-02 16:23:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 200 transitions. [2023-12-02 16:23:50,767 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 200 transitions. Word has length 54 [2023-12-02 16:23:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:23:50,768 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 200 transitions. [2023-12-02 16:23:50,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:23:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 200 transitions. [2023-12-02 16:23:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 16:23:50,772 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:23:50,772 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:23:50,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 16:23:50,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:23:50,973 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:23:50,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:23:50,973 INFO L85 PathProgramCache]: Analyzing trace with hash -913148287, now seen corresponding path program 1 times [2023-12-02 16:23:50,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:23:50,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025585357] [2023-12-02 16:23:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:50,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:23:51,066 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:23:51,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380773097] [2023-12-02 16:23:51,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:23:51,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:23:51,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:23:51,068 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:23:51,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 16:23:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:23:51,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-02 16:23:51,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:23:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 16:23:51,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:23:51,623 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:23:51,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025585357] [2023-12-02 16:23:51,623 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:23:51,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380773097] [2023-12-02 16:23:51,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380773097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:23:51,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:23:51,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 16:23:51,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065515792] [2023-12-02 16:23:51,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:23:51,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 16:23:51,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:23:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 16:23:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 16:23:51,625 INFO L87 Difference]: Start difference. First operand 173 states and 200 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:23:53,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:55,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:57,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:23:59,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:02,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:04,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:06,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:08,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:10,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:12,522 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:14,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:16,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:24:16,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:24:16,761 INFO L93 Difference]: Finished difference Result 386 states and 453 transitions. [2023-12-02 16:24:16,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 16:24:16,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2023-12-02 16:24:16,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:24:16,763 INFO L225 Difference]: With dead ends: 386 [2023-12-02 16:24:16,763 INFO L226 Difference]: Without dead ends: 231 [2023-12-02 16:24:16,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 16:24:16,765 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 242 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 8 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:24:16,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 196 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 88 Invalid, 12 Unknown, 0 Unchecked, 25.1s Time] [2023-12-02 16:24:16,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-12-02 16:24:16,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 223. [2023-12-02 16:24:16,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 213 states have (on average 1.1549295774647887) internal successors, (246), 216 states have internal predecessors, (246), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-02 16:24:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 260 transitions. [2023-12-02 16:24:16,793 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 260 transitions. Word has length 67 [2023-12-02 16:24:16,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:24:16,794 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 260 transitions. [2023-12-02 16:24:16,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 16:24:16,794 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 260 transitions. [2023-12-02 16:24:16,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-12-02 16:24:16,796 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:24:16,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:24:16,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 16:24:16,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:24:16,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:24:16,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:24:16,998 INFO L85 PathProgramCache]: Analyzing trace with hash 51433341, now seen corresponding path program 1 times [2023-12-02 16:24:16,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:24:16,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115186803] [2023-12-02 16:24:16,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:16,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:24:17,071 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:24:17,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416216918] [2023-12-02 16:24:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:24:17,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:24:17,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:24:17,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:24:17,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 16:26:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:26:52,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 581 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 16:26:52,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:26:52,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 16:26:52,101 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 16:26:52,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 16:26:52,102 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:26:52,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115186803] [2023-12-02 16:26:52,102 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:26:52,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416216918] [2023-12-02 16:26:52,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416216918] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:26:52,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:26:52,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-02 16:26:52,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588550649] [2023-12-02 16:26:52,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:26:52,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:26:52,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:26:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:26:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:26:52,105 INFO L87 Difference]: Start difference. First operand 223 states and 260 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:26:54,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:56,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:26:58,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:00,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:02,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:04,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:06,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:08,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:10,552 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:12,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:14,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:16,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:18,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:20,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:22,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:24,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:26,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:28,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:30,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:32,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:34,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:36,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:38,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:40,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:42,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:44,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:46,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:48,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-02 16:27:50,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:27:50,971 INFO L93 Difference]: Finished difference Result 427 states and 502 transitions. [2023-12-02 16:27:50,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:27:50,972 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 75 [2023-12-02 16:27:50,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:27:50,974 INFO L225 Difference]: With dead ends: 427 [2023-12-02 16:27:50,974 INFO L226 Difference]: Without dead ends: 225 [2023-12-02 16:27:50,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-12-02 16:27:50,976 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 15 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 2 mSolverCounterUnsat, 28 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 28 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.8s IncrementalHoareTripleChecker+Time [2023-12-02 16:27:50,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 528 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 160 Invalid, 28 Unknown, 0 Unchecked, 58.8s Time] [2023-12-02 16:27:50,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2023-12-02 16:27:51,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2023-12-02 16:27:51,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.158878504672897) internal successors, (248), 218 states have internal predecessors, (248), 7 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2023-12-02 16:27:51,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 263 transitions. [2023-12-02 16:27:51,014 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 263 transitions. Word has length 75 [2023-12-02 16:27:51,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:27:51,014 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 263 transitions. [2023-12-02 16:27:51,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 16:27:51,015 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 263 transitions. [2023-12-02 16:27:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-12-02 16:27:51,016 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:27:51,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:27:51,161 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 16:27:51,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 16:27:51,217 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 16:27:51,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:27:51,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1139303507, now seen corresponding path program 1 times [2023-12-02 16:27:51,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:27:51,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363844737] [2023-12-02 16:27:51,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:51,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:27:51,285 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-12-02 16:27:51,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [825936592] [2023-12-02 16:27:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:27:51,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 16:27:51,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:27:51,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 16:27:51,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b29b1c6-9160-436e-86c9-3577421701be/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 16:29:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:29:26,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 16:29:26,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 16:29:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 16:29:26,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 16:29:26,650 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 16:29:26,650 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:29:26,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363844737] [2023-12-02 16:29:26,651 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-12-02 16:29:26,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825936592] [2023-12-02 16:29:26,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825936592] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 16:29:26,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [482874065] [2023-12-02 16:29:26,675 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2023-12-02 16:29:26,675 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 16:29:26,679 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 16:29:26,684 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 16:29:26,684 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 16:30:17,969 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 7 for LOIs [2023-12-02 16:30:17,974 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 405 for LOIs [2023-12-02 16:30:23,591 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 16:31:09,100 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (= |c_#Ultimate.C_memset_#ptr.offset| 0)) (.cse4 (= 44 |c_#Ultimate.C_memset_#amount|)) (.cse0 (<= 1 |c_#StackHeapBarrier|)) (.cse1 (= |c_#Ultimate.C_memset_#value| 0)) (.cse2 (= |c_#Ultimate.C_memset_#amount| 384))) (and (or (and .cse0 .cse1 .cse2) (and .cse0 .cse3 .cse1 .cse4)) (let ((.cse5 (= |c_#memory_$Pointer$.base| |c_old(#memory_$Pointer$.base)|)) (.cse6 (= |c_old(#memory_int)| |c_#memory_int|)) (.cse15 (= |c_#memory_$Pointer$.offset| |c_old(#memory_$Pointer$.offset)|))) (or (and .cse5 .cse0 .cse6 .cse3 (exists ((|v_#memory_$Pointer$.offset_523| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_524| (Array Int (Array Int Int))) (|v_#memory_int_53| (Array Int (Array Int Int))) (|v_#memory_int_577| (Array Int (Array Int Int))) (|v_#valid_85| (Array Int Int)) (|v_#memory_$Pointer$.base_524| (Array Int (Array Int Int))) (|v_#memory_int_59| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| Int) (|v_#memory_$Pointer$.base_56| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_~_ha_hashv~0#1_BEFORE_CALL_14| Int) (|v_#memory_$Pointer$.offset_56| (Array Int (Array Int Int))) (|v_#length_37| (Array Int Int)) (|v_#memory_$Pointer$.base_523| (Array Int (Array Int Int))) (|v_#memory_int_575| (Array Int (Array Int Int)))) (let ((.cse8 (select |v_#memory_int_59| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|)) (.cse10 (select |v_#memory_int_53| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|)) (.cse9 (select |v_#memory_int_577| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|)) (.cse11 (select |v_#memory_$Pointer$.offset_56| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|)) (.cse12 (select |v_#memory_$Pointer$.offset_524| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|)) (.cse13 (select |v_#memory_$Pointer$.base_56| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|)) (.cse14 (select |v_#memory_$Pointer$.base_524| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|)) (.cse7 (select (select |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|) 8))) (and (= |c_#Ultimate.C_memset_#ptr.base| .cse7) (= (store |v_#memory_int_59| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| (store .cse8 12 (select .cse9 12))) |v_#memory_int_577|) (= |v_#memory_int_59| (store |v_#memory_int_53| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| (store (store .cse10 32 4) 16 (select .cse8 16)))) (= (store |v_#length_37| .cse7 44) |c_#length|) (= (store |v_#memory_$Pointer$.offset_523| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| (store (select |v_#memory_$Pointer$.offset_523| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|) 36 (select .cse11 36))) |v_#memory_$Pointer$.offset_56|) (<= (+ .cse7 1) |c_#StackHeapBarrier|) (= |v_#memory_int_53| (store |v_#memory_int_575| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| (store (store (select |v_#memory_int_575| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|) 36 |v_ULTIMATE.start_main_~_ha_hashv~0#1_BEFORE_CALL_14|) 28 (select .cse10 28)))) (= |c_old(#memory_int)| (store |v_#memory_int_577| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| (store .cse9 8 (select (select |c_old(#memory_int)| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|) 8)))) (= |c_#valid| (store |v_#valid_85| .cse7 1)) (= (store |v_#memory_$Pointer$.offset_56| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| (store (store .cse11 28 0) 32 (select .cse12 32))) |v_#memory_$Pointer$.offset_524|) (= (store |v_#memory_$Pointer$.base_56| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| (store (store .cse13 28 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|) 32 (select .cse14 32))) |v_#memory_$Pointer$.base_524|) (= (store |v_#memory_$Pointer$.offset_524| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| (store (store (store .cse12 16 0) 12 0) 8 0)) |c_old(#memory_$Pointer$.offset)|) (= (store |v_#memory_$Pointer$.base_523| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| (store (select |v_#memory_$Pointer$.base_523| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16|) 36 (select .cse13 36))) |v_#memory_$Pointer$.base_56|) (not (= .cse7 0)) (= (store |v_#memory_$Pointer$.base_524| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_16| (store (store (store .cse14 16 0) 12 0) 8 .cse7)) |c_old(#memory_$Pointer$.base)|) (= (select |v_#valid_85| .cse7) 0)))) .cse15 .cse1 .cse4) (and .cse5 (exists ((|v_#memory_$Pointer$.base_75| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_77| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_76| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_526| (Array Int (Array Int Int))) (|v_#valid_86| (Array Int Int)) (|v_#memory_$Pointer$.base_526| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_#t~memset~res57#1.base_18| Int) (|v_#memory_int_578| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_#t~mem56#1.base_16| Int) (|v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| Int) (|v_#length_38| (Array Int Int)) (|v_#memory_$Pointer$.offset_75| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_77| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_76| (Array Int (Array Int Int))) (|v_ULTIMATE.start_main_#t~malloc63#1.base_4| Int) (|v_ULTIMATE.start_main_~_ha_hashv~0#1_BEFORE_CALL_13| Int) (|v_#memory_int_71| (Array Int (Array Int Int))) (|v_#memory_int_72| (Array Int (Array Int Int)))) (let ((.cse16 (select (select |v_#memory_$Pointer$.base_526| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8)) (.cse17 (+ 16 (select (select |v_#memory_$Pointer$.offset_526| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8))) (.cse41 (select (select |v_#memory_$Pointer$.base_76| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8)) (.cse42 (select (select |v_#memory_$Pointer$.offset_77| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8))) (let ((.cse51 (store |v_#memory_$Pointer$.offset_77| .cse41 (store (select |v_#memory_$Pointer$.offset_77| .cse41) .cse42 0))) (.cse22 (store |v_#memory_$Pointer$.base_76| .cse41 (store (select |v_#memory_$Pointer$.base_76| .cse41) .cse42 |v_ULTIMATE.start_main_#t~malloc63#1.base_4|))) (.cse50 (store |v_#memory_$Pointer$.offset_526| .cse16 (store (select |v_#memory_$Pointer$.offset_526| .cse16) .cse17 8))) (.cse49 (store |v_#memory_$Pointer$.base_526| .cse16 (store (select |v_#memory_$Pointer$.base_526| .cse16) .cse17 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|))) (.cse52 (select (select |c_old(#memory_$Pointer$.base)| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8)) (.cse53 (select (select |c_old(#memory_$Pointer$.offset)| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8))) (let ((.cse18 (select (select |c_old(#memory_$Pointer$.base)| .cse52) .cse53)) (.cse19 (select (select |c_old(#memory_$Pointer$.offset)| .cse52) .cse53)) (.cse45 (select (select |v_#memory_$Pointer$.base_77| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8)) (.cse46 (+ (select (select |v_#memory_$Pointer$.offset_75| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8) 8)) (.cse23 (select (select |v_#memory_$Pointer$.base_75| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8)) (.cse24 (+ 20 (select (select |v_#memory_$Pointer$.offset_76| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8))) (.cse47 (select (select .cse49 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8)) (.cse48 (+ (select (select .cse50 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8) 4)) (.cse20 (select (select .cse22 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8)) (.cse21 (+ 40 (select (select .cse51 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8)))) (and (= (select |v_#valid_86| |v_ULTIMATE.start_main_#t~malloc63#1.base_4|) 0) (= |v_#memory_int_72| (store |v_#memory_int_578| .cse16 (store (select |v_#memory_int_578| .cse16) .cse17 (select (select |v_#memory_int_72| .cse16) .cse17)))) (or (not (= .cse18 0)) (not (= .cse19 0))) (= |c_#valid| (store |v_#valid_86| |v_ULTIMATE.start_main_#t~malloc63#1.base_4| 1)) (= (store |v_#memory_int_71| .cse20 (store (select |v_#memory_int_71| .cse20) .cse21 2685476833)) |c_old(#memory_int)|) (= .cse18 |c_#Ultimate.C_memset_#ptr.base|) (= (store .cse22 .cse20 (store (select .cse22 .cse20) .cse21 (select (select |c_old(#memory_$Pointer$.base)| .cse20) .cse21))) |c_old(#memory_$Pointer$.base)|) (not (= |v_ULTIMATE.start_main_#t~malloc63#1.base_4| 0)) (= (store |v_#memory_$Pointer$.offset_76| .cse23 (store (select |v_#memory_$Pointer$.offset_76| .cse23) .cse24 (select (select |v_#memory_$Pointer$.offset_77| .cse23) .cse24))) |v_#memory_$Pointer$.offset_77|) (let ((.cse28 (= |v_ULTIMATE.start_main_#t~memset~res57#1.base_18| |v_ULTIMATE.start_main_#t~mem56#1.base_16|)) (.cse32 (exists ((|v_#memory_$Pointer$.offset_523| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_524| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_56| (Array Int (Array Int Int)))) (let ((.cse39 (select |v_#memory_$Pointer$.offset_56| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|))) (and (= (store |v_#memory_$Pointer$.offset_523| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (select |v_#memory_$Pointer$.offset_523| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 36 (select .cse39 36))) |v_#memory_$Pointer$.offset_56|) (= |v_#memory_$Pointer$.offset_524| (store |v_#memory_$Pointer$.offset_56| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (store .cse39 28 0) 32 (select (select |v_#memory_$Pointer$.offset_524| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 32))))))))) (or (and (exists ((|v_#valid_85| (Array Int Int)) (|v_#memory_$Pointer$.base_524| (Array Int (Array Int Int))) (|v_#length_37| (Array Int Int)) (|v_#memory_$Pointer$.base_523| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_56| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_17| (Array Int (Array Int Int)))) (let ((.cse25 (select |v_#memory_$Pointer$.base_56| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|)) (.cse27 (select |v_#memory_$Pointer$.base_524| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|)) (.cse26 (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_17| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8))) (and (= (store |v_#memory_$Pointer$.base_523| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (select |v_#memory_$Pointer$.base_523| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 36 (select .cse25 36))) |v_#memory_$Pointer$.base_56|) (= (store |v_#length_37| .cse26 44) |v_#length_38|) (<= (+ .cse26 1) |c_#StackHeapBarrier|) (= |v_#valid_86| (store |v_#valid_85| .cse26 1)) (= .cse26 |v_ULTIMATE.start_main_#t~mem56#1.base_16|) (= (store |v_#memory_$Pointer$.base_56| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (store .cse25 28 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 32 (select .cse27 32))) |v_#memory_$Pointer$.base_524|) (= |v_old(#memory_$Pointer$.base)_AFTER_CALL_17| (store |v_#memory_$Pointer$.base_524| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (store (store .cse27 16 0) 12 0) 8 .cse26))) (not (= .cse26 0)) (= (select |v_#valid_85| .cse26) 0)))) .cse28 (exists ((|v_#memory_int_53| (Array Int (Array Int Int))) (|v_#memory_int_577| (Array Int (Array Int Int))) (|v_#memory_int_BEFORE_CALL_18| (Array Int (Array Int Int))) (|v_#memory_int_59| (Array Int (Array Int Int))) (|v_#memory_int_575| (Array Int (Array Int Int)))) (let ((.cse29 (select |v_#memory_int_53| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|)) (.cse30 (select |v_#memory_int_59| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|)) (.cse31 (select |v_#memory_int_577| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|))) (and (= |v_#memory_int_53| (store |v_#memory_int_575| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (store (select |v_#memory_int_575| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 36 |v_ULTIMATE.start_main_~_ha_hashv~0#1_BEFORE_CALL_13|) 28 (select .cse29 28)))) (= (store |v_#memory_int_59| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store .cse30 12 (select .cse31 12))) |v_#memory_int_577|) (= |v_#memory_int_59| (store |v_#memory_int_53| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (store .cse29 32 4) 16 (select .cse30 16)))) (= (store |v_#memory_int_577| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store .cse31 8 (select (select |v_#memory_int_BEFORE_CALL_18| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8))) |v_#memory_int_BEFORE_CALL_18|)))) (exists ((|v_#Ultimate.C_memset_#t~loopctr320_BEFORE_RETURN_9| Int)) (and (<= 44 (mod |v_#Ultimate.C_memset_#t~loopctr320_BEFORE_RETURN_9| 4294967296)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr320_BEFORE_RETURN_9|))) .cse32) (and (exists ((|v_#Ultimate.C_memset_#t~loopctr320_BEFORE_RETURN_10| Int)) (and (<= 44 (mod |v_#Ultimate.C_memset_#t~loopctr320_BEFORE_RETURN_10| 4294967296)) (<= 0 |v_#Ultimate.C_memset_#t~loopctr320_BEFORE_RETURN_10|))) (exists ((|v_#memory_int_53| (Array Int (Array Int Int))) (|v_#memory_int_577| (Array Int (Array Int Int))) (|v_#memory_int_59| (Array Int (Array Int Int))) (|v_#memory_int_BEFORE_CALL_20| (Array Int (Array Int Int))) (|v_#memory_int_575| (Array Int (Array Int Int)))) (let ((.cse33 (select |v_#memory_int_53| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|)) (.cse34 (select |v_#memory_int_59| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|)) (.cse35 (select |v_#memory_int_577| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|))) (and (= |v_#memory_int_53| (store |v_#memory_int_575| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (store (select |v_#memory_int_575| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 36 |v_ULTIMATE.start_main_~_ha_hashv~0#1_BEFORE_CALL_13|) 28 (select .cse33 28)))) (= (store |v_#memory_int_59| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store .cse34 12 (select .cse35 12))) |v_#memory_int_577|) (= |v_#memory_int_59| (store |v_#memory_int_53| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (store .cse33 32 4) 16 (select .cse34 16)))) (= (store |v_#memory_int_577| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store .cse35 8 (select (select |v_#memory_int_BEFORE_CALL_20| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8))) |v_#memory_int_BEFORE_CALL_20|)))) (exists ((|v_#valid_85| (Array Int Int)) (|v_#memory_$Pointer$.base_524| (Array Int (Array Int Int))) (|v_#length_37| (Array Int Int)) (|v_#memory_$Pointer$.base_523| (Array Int (Array Int Int))) (|v_old(#memory_$Pointer$.base)_AFTER_CALL_18| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_56| (Array Int (Array Int Int)))) (let ((.cse38 (select |v_#memory_$Pointer$.base_56| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|)) (.cse36 (select |v_#memory_$Pointer$.base_524| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|)) (.cse37 (select (select |v_old(#memory_$Pointer$.base)_AFTER_CALL_18| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 8))) (and (= |v_old(#memory_$Pointer$.base)_AFTER_CALL_18| (store |v_#memory_$Pointer$.base_524| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (store (store .cse36 16 0) 12 0) 8 .cse37))) (= (store |v_#memory_$Pointer$.base_523| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (select |v_#memory_$Pointer$.base_523| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 36 (select .cse38 36))) |v_#memory_$Pointer$.base_56|) (= |v_#length_38| (store |v_#length_37| .cse37 44)) (not (= .cse37 0)) (= (store |v_#valid_85| .cse37 1) |v_#valid_86|) (= (store |v_#memory_$Pointer$.base_56| |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15| (store (store .cse38 28 |v_ULTIMATE.start_main_~user~0#1.base_BEFORE_CALL_15|) 32 (select .cse36 32))) |v_#memory_$Pointer$.base_524|) (= (select |v_#valid_85| .cse37) 0) (= .cse37 |v_ULTIMATE.start_main_#t~mem56#1.base_16|) (<= (+ .cse37 1) |c_#StackHeapBarrier|)))) .cse28 .cse32))) (= |c_#Ultimate.C_memset_#ptr.offset| .cse19) (= |v_#memory_int_71| (let ((.cse40 (let ((.cse43 (let ((.cse44 (store |v_#memory_int_72| .cse47 (store (select |v_#memory_int_72| .cse47) .cse48 32)))) (store .cse44 .cse45 (store (select .cse44 .cse45) .cse46 5))))) (store .cse43 .cse23 (store (select .cse43 .cse23) .cse24 8))))) (store .cse40 .cse41 (store (select .cse40 .cse41) .cse42 (select (select |v_#memory_int_71| .cse41) .cse42))))) (= (store |v_#memory_$Pointer$.offset_75| .cse45 (store (select |v_#memory_$Pointer$.offset_75| .cse45) .cse46 (select (select |v_#memory_$Pointer$.offset_76| .cse45) .cse46))) |v_#memory_$Pointer$.offset_76|) (= (store .cse49 .cse47 (store (select .cse49 .cse47) .cse48 (select (select |v_#memory_$Pointer$.base_77| .cse47) .cse48))) |v_#memory_$Pointer$.base_77|) (= (store |v_#memory_$Pointer$.base_77| .cse45 (store (select |v_#memory_$Pointer$.base_77| .cse45) .cse46 (select (select |v_#memory_$Pointer$.base_75| .cse45) .cse46))) |v_#memory_$Pointer$.base_75|) (= (store |v_#length_38| |v_ULTIMATE.start_main_#t~malloc63#1.base_4| 384) |c_#length|) (<= (+ |v_ULTIMATE.start_main_#t~malloc63#1.base_4| 1) |c_#StackHeapBarrier|) (= (store |v_#memory_$Pointer$.base_75| .cse23 (store (select |v_#memory_$Pointer$.base_75| .cse23) .cse24 (select (select |v_#memory_$Pointer$.base_76| .cse23) .cse24))) |v_#memory_$Pointer$.base_76|) (= (store .cse50 .cse47 (store (select .cse50 .cse47) .cse48 (select (select |v_#memory_$Pointer$.offset_75| .cse47) .cse48))) |v_#memory_$Pointer$.offset_75|) (= (store .cse51 .cse20 (store (select .cse51 .cse20) .cse21 (select (select |c_old(#memory_$Pointer$.offset)| .cse20) .cse21))) |c_old(#memory_$Pointer$.offset)|)))))) .cse0 .cse6 .cse15 .cse1 .cse2))))) is different from false [2023-12-02 16:33:56,294 WARN L293 SmtUtils]: Spent 2.07m on a formula simplification that was a NOOP. DAG size: 323 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)