./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-data/running_example.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:24:33,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:24:33,736 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 06:24:33,741 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:24:33,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:24:33,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:24:33,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:24:33,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:24:33,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:24:33,775 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:24:33,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:24:33,776 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:24:33,777 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:24:33,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:24:33,778 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:24:33,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:24:33,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:24:33,780 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:24:33,781 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 06:24:33,782 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:24:33,782 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:24:33,783 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:24:33,783 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:24:33,784 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:24:33,784 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:24:33,785 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:24:33,785 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:24:33,786 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:24:33,787 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:24:33,787 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:24:33,788 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:24:33,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:24:33,789 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:24:33,789 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:24:33,790 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:24:33,790 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 06:24:33,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 06:24:33,791 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:24:33,791 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:24:33,791 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:24:33,792 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:24:33,792 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:24:33,792 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f [2023-11-29 06:24:34,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:24:34,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:24:34,136 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:24:34,137 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:24:34,138 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:24:34,139 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/heap-data/running_example.i [2023-11-29 06:24:37,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:24:37,575 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:24:37,575 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/sv-benchmarks/c/heap-data/running_example.i [2023-11-29 06:24:37,589 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/data/efb8210fd/20030b6024d24c3d849116335744a44a/FLAGf85de14e7 [2023-11-29 06:24:37,601 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/data/efb8210fd/20030b6024d24c3d849116335744a44a [2023-11-29 06:24:37,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:24:37,605 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:24:37,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:24:37,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:24:37,610 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:24:37,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:24:37" (1/1) ... [2023-11-29 06:24:37,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@419c742a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:37, skipping insertion in model container [2023-11-29 06:24:37,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:24:37" (1/1) ... [2023-11-29 06:24:37,650 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:24:37,925 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_37b052f6-c2e9-4915-b562-7cab933853df/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2023-11-29 06:24:37,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:24:37,944 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:24:37,982 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_37b052f6-c2e9-4915-b562-7cab933853df/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2023-11-29 06:24:37,984 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:24:38,017 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:24:38,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38 WrapperNode [2023-11-29 06:24:38,018 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:24:38,019 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:24:38,019 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:24:38,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:24:38,027 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,040 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,064 INFO L138 Inliner]: procedures = 121, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2023-11-29 06:24:38,064 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:24:38,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:24:38,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:24:38,065 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:24:38,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,082 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,100 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2023-11-29 06:24:38,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:24:38,121 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:24:38,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:24:38,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:24:38,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (1/1) ... [2023-11-29 06:24:38,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:24:38,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:38,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:24:38,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:24:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 06:24:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 06:24:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 06:24:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 06:24:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:24:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:24:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 06:24:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 06:24:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 06:24:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 06:24:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 06:24:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 06:24:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:24:38,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:24:38,349 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:24:38,351 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:24:38,510 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:24:38,537 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:24:38,537 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 06:24:38,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:24:38 BoogieIcfgContainer [2023-11-29 06:24:38,538 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:24:38,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:24:38,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:24:38,544 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:24:38,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:24:37" (1/3) ... [2023-11-29 06:24:38,545 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fe4cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:24:38, skipping insertion in model container [2023-11-29 06:24:38,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:38" (2/3) ... [2023-11-29 06:24:38,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31fe4cd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:24:38, skipping insertion in model container [2023-11-29 06:24:38,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:24:38" (3/3) ... [2023-11-29 06:24:38,548 INFO L112 eAbstractionObserver]: Analyzing ICFG running_example.i [2023-11-29 06:24:38,567 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:24:38,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:24:38,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:24:38,622 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=PETRI_NET, 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;@24f1add2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:24:38,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:24:38,627 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:24:38,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:38,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:38,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:38,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1646938671, now seen corresponding path program 1 times [2023-11-29 06:24:38,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:38,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018354461] [2023-11-29 06:24:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:38,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:38,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:38,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018354461] [2023-11-29 06:24:38,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018354461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:38,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:38,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:24:38,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386678343] [2023-11-29 06:24:38,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:38,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:24:38,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:38,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:24:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:24:38,883 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:38,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:38,908 INFO L93 Difference]: Finished difference Result 25 states and 41 transitions. [2023-11-29 06:24:38,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:24:38,911 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 06:24:38,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:38,920 INFO L225 Difference]: With dead ends: 25 [2023-11-29 06:24:38,920 INFO L226 Difference]: Without dead ends: 14 [2023-11-29 06:24:38,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:24:38,926 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:38,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:24:38,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-29 06:24:38,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-29 06:24:38,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2023-11-29 06:24:38,975 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 7 [2023-11-29 06:24:38,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:38,976 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2023-11-29 06:24:38,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:38,977 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2023-11-29 06:24:38,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 06:24:38,977 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:38,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:38,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 06:24:38,978 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:38,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:38,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1234098151, now seen corresponding path program 1 times [2023-11-29 06:24:38,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:38,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227837826] [2023-11-29 06:24:38,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:38,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:39,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:39,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:39,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227837826] [2023-11-29 06:24:39,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227837826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:39,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:39,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:24:39,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067615239] [2023-11-29 06:24:39,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:39,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:24:39,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:39,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:24:39,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:24:39,298 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:39,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:39,434 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2023-11-29 06:24:39,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:24:39,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 06:24:39,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:39,438 INFO L225 Difference]: With dead ends: 34 [2023-11-29 06:24:39,438 INFO L226 Difference]: Without dead ends: 25 [2023-11-29 06:24:39,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:24:39,441 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:39,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:24:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-29 06:24:39,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2023-11-29 06:24:39,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-11-29 06:24:39,451 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2023-11-29 06:24:39,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:39,451 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-11-29 06:24:39,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-11-29 06:24:39,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 06:24:39,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:39,453 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:39,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 06:24:39,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:39,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:39,454 INFO L85 PathProgramCache]: Analyzing trace with hash -825321697, now seen corresponding path program 1 times [2023-11-29 06:24:39,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:39,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740176205] [2023-11-29 06:24:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:39,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:39,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:39,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740176205] [2023-11-29 06:24:39,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740176205] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:39,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496244798] [2023-11-29 06:24:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:39,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:39,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:39,920 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:39,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 06:24:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:40,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 06:24:40,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:40,143 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 [2023-11-29 06:24:40,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 06:24:40,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 22 [2023-11-29 06:24:40,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:24:40,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2023-11-29 06:24:40,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:24:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:40,387 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:40,459 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_88 (Array Int Int)) (v_ArrVal_87 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_19| Int)) (or (< 9 (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_88) |v_ULTIMATE.start_main_~p~0#1.base_19| v_ArrVal_87) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (not (= (let ((.cse0 (+ |c_ULTIMATE.start_main_~tail~0#1.offset| 4))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse0 (select v_ArrVal_88 .cse0))) v_ArrVal_88)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_19|) 0)))) is different from false [2023-11-29 06:24:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-29 06:24:40,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496244798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:40,519 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:40,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-29 06:24:40,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76722349] [2023-11-29 06:24:40,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:40,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:24:40,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:40,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:24:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=80, Unknown=1, NotChecked=18, Total=132 [2023-11-29 06:24:40,522 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:40,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:40,843 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2023-11-29 06:24:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:24:40,844 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 06:24:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:40,846 INFO L225 Difference]: With dead ends: 65 [2023-11-29 06:24:40,846 INFO L226 Difference]: Without dead ends: 56 [2023-11-29 06:24:40,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=206, Unknown=1, NotChecked=32, Total=342 [2023-11-29 06:24:40,848 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 76 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:40,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 102 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2023-11-29 06:24:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-29 06:24:40,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 35. [2023-11-29 06:24:40,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.5) internal successors, (51), 34 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 51 transitions. [2023-11-29 06:24:40,860 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 51 transitions. Word has length 13 [2023-11-29 06:24:40,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:40,861 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 51 transitions. [2023-11-29 06:24:40,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:40,861 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 51 transitions. [2023-11-29 06:24:40,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:24:40,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:40,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:40,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:24:41,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:41,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:41,065 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:41,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1998928062, now seen corresponding path program 1 times [2023-11-29 06:24:41,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:41,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727044884] [2023-11-29 06:24:41,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:41,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:41,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:41,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727044884] [2023-11-29 06:24:41,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727044884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:41,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907692461] [2023-11-29 06:24:41,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:41,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:41,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:41,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:41,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 06:24:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:41,441 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:24:41,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:41,456 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 06:24:41,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 06:24:41,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:24:41,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:24:41,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:41,615 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:41,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:41,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907692461] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:41,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:41,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2023-11-29 06:24:41,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492483060] [2023-11-29 06:24:41,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:41,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:24:41,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:41,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:24:41,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:24:41,702 INFO L87 Difference]: Start difference. First operand 35 states and 51 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:41,889 INFO L93 Difference]: Finished difference Result 81 states and 116 transitions. [2023-11-29 06:24:41,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:24:41,890 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 06:24:41,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:41,891 INFO L225 Difference]: With dead ends: 81 [2023-11-29 06:24:41,891 INFO L226 Difference]: Without dead ends: 62 [2023-11-29 06:24:41,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:24:41,893 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 44 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:41,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 50 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:24:41,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-11-29 06:24:41,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2023-11-29 06:24:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.4814814814814814) internal successors, (80), 54 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 80 transitions. [2023-11-29 06:24:41,912 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 80 transitions. Word has length 15 [2023-11-29 06:24:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:41,912 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 80 transitions. [2023-11-29 06:24:41,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 80 transitions. [2023-11-29 06:24:41,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:24:41,914 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:41,914 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:41,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 06:24:42,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:42,115 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:42,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:42,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1187174786, now seen corresponding path program 1 times [2023-11-29 06:24:42,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:42,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139951215] [2023-11-29 06:24:42,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:42,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:42,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:42,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139951215] [2023-11-29 06:24:42,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139951215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:42,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923829294] [2023-11-29 06:24:42,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:42,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:42,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:42,386 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:42,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 06:24:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:42,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:24:42,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:42,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-29 06:24:42,662 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 15 treesize of output 7 [2023-11-29 06:24:42,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:42,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:42,774 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-29 06:24:42,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2023-11-29 06:24:42,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:42,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923829294] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:42,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:42,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-11-29 06:24:42,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546560266] [2023-11-29 06:24:42,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:42,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 06:24:42,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:42,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 06:24:42,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-29 06:24:42,821 INFO L87 Difference]: Start difference. First operand 55 states and 80 transitions. Second operand has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:43,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:43,537 INFO L93 Difference]: Finished difference Result 210 states and 288 transitions. [2023-11-29 06:24:43,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-29 06:24:43,538 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 06:24:43,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:43,540 INFO L225 Difference]: With dead ends: 210 [2023-11-29 06:24:43,540 INFO L226 Difference]: Without dead ends: 174 [2023-11-29 06:24:43,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=273, Invalid=657, Unknown=0, NotChecked=0, Total=930 [2023-11-29 06:24:43,542 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 154 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:43,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 175 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:24:43,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2023-11-29 06:24:43,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 68. [2023-11-29 06:24:43,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.462686567164179) internal successors, (98), 67 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:43,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 98 transitions. [2023-11-29 06:24:43,564 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 98 transitions. Word has length 17 [2023-11-29 06:24:43,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:43,565 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 98 transitions. [2023-11-29 06:24:43,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.6470588235294117) internal successors, (45), 17 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 98 transitions. [2023-11-29 06:24:43,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:24:43,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:43,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:43,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 06:24:43,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:43,772 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:43,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:43,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1996523334, now seen corresponding path program 1 times [2023-11-29 06:24:43,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:43,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660765635] [2023-11-29 06:24:43,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:43,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:43,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:24:43,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:43,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660765635] [2023-11-29 06:24:43,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660765635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:24:43,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:24:43,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:24:43,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129881031] [2023-11-29 06:24:43,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:24:43,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:24:43,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:43,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:24:43,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:24:43,907 INFO L87 Difference]: Start difference. First operand 68 states and 98 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:43,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:43,990 INFO L93 Difference]: Finished difference Result 85 states and 119 transitions. [2023-11-29 06:24:43,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:24:43,991 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 06:24:43,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:43,992 INFO L225 Difference]: With dead ends: 85 [2023-11-29 06:24:43,992 INFO L226 Difference]: Without dead ends: 75 [2023-11-29 06:24:43,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:24:43,994 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:43,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 06:24:43,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-29 06:24:44,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2023-11-29 06:24:44,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 73 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:44,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2023-11-29 06:24:44,014 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 17 [2023-11-29 06:24:44,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:44,015 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2023-11-29 06:24:44,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:44,015 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2023-11-29 06:24:44,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:24:44,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:44,017 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:44,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 06:24:44,017 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:44,018 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:44,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1926163675, now seen corresponding path program 2 times [2023-11-29 06:24:44,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:44,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400957496] [2023-11-29 06:24:44,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:44,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:44,484 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:44,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:44,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400957496] [2023-11-29 06:24:44,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400957496] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:44,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569431662] [2023-11-29 06:24:44,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:24:44,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:44,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:44,486 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:44,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 06:24:44,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:24:44,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:24:44,624 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 06:24:44,628 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:44,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 06:24:44,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:24:44,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 22 [2023-11-29 06:24:44,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:24:44,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 11 [2023-11-29 06:24:44,775 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:24:44,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 18 [2023-11-29 06:24:44,803 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 06:24:44,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-29 06:24:44,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:24:44,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 06:24:44,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:24:44,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2023-11-29 06:24:44,914 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 06:24:44,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-29 06:24:44,992 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 15 treesize of output 7 [2023-11-29 06:24:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:44,997 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:45,146 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_290 (Array Int Int)) (|v_ULTIMATE.start_main_~tail~0#1.base_13| Int) (v_ArrVal_292 (Array Int Int)) (v_ArrVal_286 Int) (v_ArrVal_287 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_27| Int)) (or (< 9 (select (select (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_287) |v_ULTIMATE.start_main_~tail~0#1.base_13| v_ArrVal_292) |v_ULTIMATE.start_main_~p~0#1.base_27| v_ArrVal_290) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|)) (not (= v_ArrVal_287 (let ((.cse0 (+ |c_ULTIMATE.start_main_~tail~0#1.offset| 4))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse0 (select v_ArrVal_287 .cse0))))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_13|) 0)) (not (= (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_13| v_ArrVal_286) |v_ULTIMATE.start_main_~p~0#1.base_27|) 0)))) is different from false [2023-11-29 06:24:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-11-29 06:24:45,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569431662] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:45,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:45,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-11-29 06:24:45,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40081560] [2023-11-29 06:24:45,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:45,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:24:45,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:45,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:24:45,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=144, Unknown=1, NotChecked=24, Total=210 [2023-11-29 06:24:45,225 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:45,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:45,775 INFO L93 Difference]: Finished difference Result 127 states and 181 transitions. [2023-11-29 06:24:45,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 06:24:45,776 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 06:24:45,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:45,778 INFO L225 Difference]: With dead ends: 127 [2023-11-29 06:24:45,778 INFO L226 Difference]: Without dead ends: 104 [2023-11-29 06:24:45,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=149, Invalid=406, Unknown=1, NotChecked=44, Total=600 [2023-11-29 06:24:45,780 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 152 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:45,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 96 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 181 Invalid, 0 Unknown, 64 Unchecked, 0.2s Time] [2023-11-29 06:24:45,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-11-29 06:24:45,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 70. [2023-11-29 06:24:45,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.434782608695652) internal successors, (99), 69 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:45,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 99 transitions. [2023-11-29 06:24:45,797 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 99 transitions. Word has length 17 [2023-11-29 06:24:45,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:45,798 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 99 transitions. [2023-11-29 06:24:45,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:45,798 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 99 transitions. [2023-11-29 06:24:45,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:24:45,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:45,800 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:45,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 06:24:46,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-29 06:24:46,004 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:46,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:46,005 INFO L85 PathProgramCache]: Analyzing trace with hash 948853192, now seen corresponding path program 1 times [2023-11-29 06:24:46,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:46,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703970664] [2023-11-29 06:24:46,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:46,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:46,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:46,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703970664] [2023-11-29 06:24:46,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703970664] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:46,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887606683] [2023-11-29 06:24:46,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:46,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:46,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:46,557 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:46,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 06:24:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:46,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 06:24:46,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:46,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 06:24:46,741 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-29 06:24:46,748 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-29 06:24:46,765 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:24:46,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 69 [2023-11-29 06:24:46,773 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 27 treesize of output 1 [2023-11-29 06:24:46,784 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-29 06:24:46,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-29 06:24:46,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-29 06:24:46,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:24:46,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 06:24:46,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 06:24:46,974 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 27 treesize of output 15 [2023-11-29 06:24:46,979 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 06:24:47,013 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 15 treesize of output 7 [2023-11-29 06:24:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:47,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:47,065 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_373 (Array Int Int))) (< 9 (let ((.cse0 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_373) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0))))) is different from false [2023-11-29 06:24:47,159 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:47,159 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57 [2023-11-29 06:24:47,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:47,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 105 [2023-11-29 06:24:47,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:47,189 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 80 [2023-11-29 06:24:47,202 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:47,202 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2023-11-29 06:24:47,222 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:47,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 101 [2023-11-29 06:24:47,261 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:47,262 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 110 [2023-11-29 06:24:47,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 57 [2023-11-29 06:24:47,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2023-11-29 06:24:47,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:47,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 50 [2023-11-29 06:24:47,710 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-29 06:24:47,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887606683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:47,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:47,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2023-11-29 06:24:47,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176318523] [2023-11-29 06:24:47,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:47,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:24:47,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:47,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:24:47,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=146, Unknown=2, NotChecked=24, Total=210 [2023-11-29 06:24:47,714 INFO L87 Difference]: Start difference. First operand 70 states and 99 transitions. Second operand has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:48,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:48,106 INFO L93 Difference]: Finished difference Result 131 states and 180 transitions. [2023-11-29 06:24:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:24:48,107 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 06:24:48,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:48,108 INFO L225 Difference]: With dead ends: 131 [2023-11-29 06:24:48,108 INFO L226 Difference]: Without dead ends: 129 [2023-11-29 06:24:48,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=239, Unknown=2, NotChecked=32, Total=342 [2023-11-29 06:24:48,109 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 110 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:48,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 152 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 191 Invalid, 0 Unknown, 78 Unchecked, 0.3s Time] [2023-11-29 06:24:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-29 06:24:48,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 103. [2023-11-29 06:24:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 102 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 147 transitions. [2023-11-29 06:24:48,133 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 147 transitions. Word has length 19 [2023-11-29 06:24:48,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:48,133 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 147 transitions. [2023-11-29 06:24:48,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:48,134 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 147 transitions. [2023-11-29 06:24:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:24:48,135 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:48,136 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:48,141 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 06:24:48,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-29 06:24:48,337 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:48,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash 948855114, now seen corresponding path program 1 times [2023-11-29 06:24:48,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:48,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966926903] [2023-11-29 06:24:48,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:48,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:48,902 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:48,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:48,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966926903] [2023-11-29 06:24:48,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966926903] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:48,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474437084] [2023-11-29 06:24:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:48,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:48,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:48,904 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:48,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 06:24:49,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:49,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-29 06:24:49,039 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:49,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 06:24:49,099 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-29 06:24:49,116 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 06:24:49,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 77 [2023-11-29 06:24:49,122 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2023-11-29 06:24:49,138 INFO L349 Elim1Store]: treesize reduction 21, result has 38.2 percent of original size [2023-11-29 06:24:49,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-11-29 06:24:49,151 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 27 treesize of output 1 [2023-11-29 06:24:49,163 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-29 06:24:49,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-29 06:24:49,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:24:49,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 06:24:49,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 06:24:49,338 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 27 treesize of output 15 [2023-11-29 06:24:49,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 06:24:49,370 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 15 treesize of output 7 [2023-11-29 06:24:49,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:49,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:49,470 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_457 (Array Int Int))) (< (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_457) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0))) 21)) is different from false [2023-11-29 06:24:49,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:49,503 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57 [2023-11-29 06:24:49,519 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:49,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 105 [2023-11-29 06:24:49,531 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:49,531 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 80 [2023-11-29 06:24:49,542 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:49,542 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2023-11-29 06:24:49,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:49,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 101 [2023-11-29 06:24:49,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:49,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 110 [2023-11-29 06:24:49,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 57 [2023-11-29 06:24:49,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2023-11-29 06:24:49,633 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:49,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 50 [2023-11-29 06:24:50,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-29 06:24:50,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474437084] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:50,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:50,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2023-11-29 06:24:50,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116620076] [2023-11-29 06:24:50,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:50,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:24:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:50,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:24:50,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=143, Unknown=5, NotChecked=24, Total=210 [2023-11-29 06:24:50,025 INFO L87 Difference]: Start difference. First operand 103 states and 147 transitions. Second operand has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:50,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:50,489 INFO L93 Difference]: Finished difference Result 202 states and 286 transitions. [2023-11-29 06:24:50,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 06:24:50,490 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 06:24:50,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:50,491 INFO L225 Difference]: With dead ends: 202 [2023-11-29 06:24:50,491 INFO L226 Difference]: Without dead ends: 150 [2023-11-29 06:24:50,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=238, Unknown=5, NotChecked=32, Total=342 [2023-11-29 06:24:50,492 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 62 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:50,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 223 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 285 Invalid, 0 Unknown, 79 Unchecked, 0.3s Time] [2023-11-29 06:24:50,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-29 06:24:50,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 121. [2023-11-29 06:24:50,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.4416666666666667) internal successors, (173), 120 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:50,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 173 transitions. [2023-11-29 06:24:50,517 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 173 transitions. Word has length 19 [2023-11-29 06:24:50,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:50,517 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 173 transitions. [2023-11-29 06:24:50,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.066666666666667) internal successors, (46), 14 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:50,518 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 173 transitions. [2023-11-29 06:24:50,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 06:24:50,519 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:50,519 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:50,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 06:24:50,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:50,720 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:50,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:50,721 INFO L85 PathProgramCache]: Analyzing trace with hash 437813696, now seen corresponding path program 1 times [2023-11-29 06:24:50,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:50,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835167775] [2023-11-29 06:24:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:50,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:24:50,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:50,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835167775] [2023-11-29 06:24:50,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835167775] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:50,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584063219] [2023-11-29 06:24:50,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:50,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:50,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:50,981 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:50,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 06:24:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:51,117 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 06:24:51,119 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:51,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2023-11-29 06:24:51,293 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 15 treesize of output 7 [2023-11-29 06:24:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:24:51,296 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:51,474 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-29 06:24:51,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 32 [2023-11-29 06:24:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:24:51,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584063219] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:51,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:51,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2023-11-29 06:24:51,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216897245] [2023-11-29 06:24:51,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:51,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:24:51,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:51,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:24:51,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 06:24:51,503 INFO L87 Difference]: Start difference. First operand 121 states and 173 transitions. Second operand has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:51,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:51,829 INFO L93 Difference]: Finished difference Result 165 states and 226 transitions. [2023-11-29 06:24:51,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:24:51,830 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 06:24:51,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:51,832 INFO L225 Difference]: With dead ends: 165 [2023-11-29 06:24:51,832 INFO L226 Difference]: Without dead ends: 138 [2023-11-29 06:24:51,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-11-29 06:24:51,834 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 76 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:51,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 107 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 06:24:51,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-29 06:24:51,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 117. [2023-11-29 06:24:51,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.4741379310344827) internal successors, (171), 116 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:51,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 171 transitions. [2023-11-29 06:24:51,850 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 171 transitions. Word has length 21 [2023-11-29 06:24:51,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:51,851 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 171 transitions. [2023-11-29 06:24:51,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:51,851 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 171 transitions. [2023-11-29 06:24:51,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 06:24:51,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:51,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:51,858 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 06:24:52,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 06:24:52,053 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:52,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:52,054 INFO L85 PathProgramCache]: Analyzing trace with hash 437815618, now seen corresponding path program 1 times [2023-11-29 06:24:52,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:52,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135001068] [2023-11-29 06:24:52,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:52,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:24:52,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:52,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135001068] [2023-11-29 06:24:52,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135001068] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:52,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460909960] [2023-11-29 06:24:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:52,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:52,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:52,325 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:52,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 06:24:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:52,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 06:24:52,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:52,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2023-11-29 06:24:52,698 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 15 treesize of output 7 [2023-11-29 06:24:52,702 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:24:52,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:52,984 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-29 06:24:52,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2023-11-29 06:24:52,991 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:24:52,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460909960] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:24:52,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:24:52,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2023-11-29 06:24:52,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466056780] [2023-11-29 06:24:52,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:24:52,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 06:24:52,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:24:52,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 06:24:52,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2023-11-29 06:24:52,995 INFO L87 Difference]: Start difference. First operand 117 states and 171 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:53,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:24:53,748 INFO L93 Difference]: Finished difference Result 346 states and 496 transitions. [2023-11-29 06:24:53,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:24:53,749 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 06:24:53,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:24:53,752 INFO L225 Difference]: With dead ends: 346 [2023-11-29 06:24:53,752 INFO L226 Difference]: Without dead ends: 291 [2023-11-29 06:24:53,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=402, Invalid=930, Unknown=0, NotChecked=0, Total=1332 [2023-11-29 06:24:53,754 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 173 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:24:53,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 150 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:24:53,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2023-11-29 06:24:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 204. [2023-11-29 06:24:53,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 1.4827586206896552) internal successors, (301), 203 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:53,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 301 transitions. [2023-11-29 06:24:53,779 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 301 transitions. Word has length 21 [2023-11-29 06:24:53,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:24:53,779 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 301 transitions. [2023-11-29 06:24:53,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:24:53,780 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 301 transitions. [2023-11-29 06:24:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 06:24:53,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:24:53,781 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:24:53,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 06:24:53,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 06:24:53,982 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:24:53,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:24:53,983 INFO L85 PathProgramCache]: Analyzing trace with hash -410437298, now seen corresponding path program 2 times [2023-11-29 06:24:53,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:24:53,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497320281] [2023-11-29 06:24:53,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:24:53,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:24:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:24:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:54,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:24:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497320281] [2023-11-29 06:24:54,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497320281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:24:54,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509586319] [2023-11-29 06:24:54,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:24:54,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:24:54,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:24:54,831 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:24:54,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 06:24:54,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:24:54,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:24:55,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 06:24:55,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:24:55,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 06:24:55,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:24:55,104 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 06:24:55,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 06:24:55,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-29 06:24:55,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:24:55,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-29 06:24:55,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:24:55,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:24:55,299 INFO L349 Elim1Store]: treesize reduction 44, result has 10.2 percent of original size [2023-11-29 06:24:55,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 103 treesize of output 76 [2023-11-29 06:24:55,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 34 [2023-11-29 06:24:55,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:24:55,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-29 06:24:55,342 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 06:24:55,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-11-29 06:24:55,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 06:24:55,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:24:55,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 06:24:55,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 06:24:55,525 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 27 treesize of output 15 [2023-11-29 06:24:55,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 06:24:55,568 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 15 treesize of output 7 [2023-11-29 06:24:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:24:55,572 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:24:55,673 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int))) (< 9 (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_733) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0))))) is different from false [2023-11-29 06:24:55,851 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:55,852 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 69 [2023-11-29 06:24:55,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:55,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 343 treesize of output 252 [2023-11-29 06:24:55,898 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:55,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 226 treesize of output 198 [2023-11-29 06:24:55,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:55,918 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 152 [2023-11-29 06:24:55,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:55,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 488 treesize of output 469 [2023-11-29 06:24:56,029 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:56,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 377 treesize of output 447 [2023-11-29 06:24:56,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 248 treesize of output 212 [2023-11-29 06:24:56,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 307 [2023-11-29 06:24:56,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 307 treesize of output 271 [2023-11-29 06:24:56,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 144 [2023-11-29 06:24:56,142 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:56,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 222 treesize of output 230 [2023-11-29 06:24:56,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:24:56,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 206 treesize of output 222 [2023-11-29 06:25:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-11-29 06:25:02,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509586319] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:25:02,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:25:02,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2023-11-29 06:25:02,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763656548] [2023-11-29 06:25:02,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:25:02,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-29 06:25:02,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:25:02,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-29 06:25:02,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=223, Unknown=2, NotChecked=30, Total=306 [2023-11-29 06:25:02,140 INFO L87 Difference]: Start difference. First operand 204 states and 301 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:25:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:25:03,171 INFO L93 Difference]: Finished difference Result 300 states and 429 transitions. [2023-11-29 06:25:03,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:25:03,172 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-29 06:25:03,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:25:03,175 INFO L225 Difference]: With dead ends: 300 [2023-11-29 06:25:03,175 INFO L226 Difference]: Without dead ends: 298 [2023-11-29 06:25:03,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=149, Invalid=553, Unknown=4, NotChecked=50, Total=756 [2023-11-29 06:25:03,177 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 164 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 30 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:25:03,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 179 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 236 Invalid, 2 Unknown, 122 Unchecked, 0.6s Time] [2023-11-29 06:25:03,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2023-11-29 06:25:03,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 222. [2023-11-29 06:25:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.4796380090497738) internal successors, (327), 221 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:25:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 327 transitions. [2023-11-29 06:25:03,204 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 327 transitions. Word has length 23 [2023-11-29 06:25:03,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:25:03,205 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 327 transitions. [2023-11-29 06:25:03,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:25:03,205 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 327 transitions. [2023-11-29 06:25:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 06:25:03,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:25:03,206 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:25:03,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-29 06:25:03,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 06:25:03,407 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:25:03,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:25:03,407 INFO L85 PathProgramCache]: Analyzing trace with hash -410435376, now seen corresponding path program 2 times [2023-11-29 06:25:03,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:25:03,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119814257] [2023-11-29 06:25:03,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:03,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:25:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:04,321 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:04,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:25:04,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119814257] [2023-11-29 06:25:04,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119814257] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:25:04,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443178774] [2023-11-29 06:25:04,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:25:04,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:25:04,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:25:04,324 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:25:04,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 06:25:04,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:25:04,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:25:04,471 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 06:25:04,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:25:04,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 06:25:04,554 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-29 06:25:04,571 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 06:25:04,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 06:25:04,584 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-29 06:25:04,602 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 06:25:04,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 06:25:04,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 06:25:04,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:25:04,646 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 06:25:04,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-29 06:25:04,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:25:04,818 INFO L349 Elim1Store]: treesize reduction 44, result has 10.2 percent of original size [2023-11-29 06:25:04,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 105 treesize of output 78 [2023-11-29 06:25:04,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:25:04,834 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 36 [2023-11-29 06:25:04,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:25:04,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2023-11-29 06:25:04,869 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 06:25:04,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-11-29 06:25:04,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 06:25:05,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:25:05,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2023-11-29 06:25:05,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2023-11-29 06:25:05,056 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 27 treesize of output 15 [2023-11-29 06:25:05,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 06:25:05,093 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 15 treesize of output 7 [2023-11-29 06:25:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:05,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:25:05,151 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_863 (Array Int Int))) (< (let ((.cse0 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_863) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base|) .cse0))) 21)) is different from false [2023-11-29 06:25:05,174 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_863 (Array Int Int))) (< (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_863) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse0))) 21)) is different from false [2023-11-29 06:25:05,207 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_854 (Array Int Int)) (v_ArrVal_853 (Array Int Int)) (|v_ULTIMATE.start_main_~p~0#1.base_51| Int) (v_ArrVal_856 (Array Int Int)) (v_ArrVal_858 (Array Int Int)) (v_ArrVal_859 Int) (v_ArrVal_860 (Array Int Int)) (v_ArrVal_863 (Array Int Int))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_51|) 0)) (< (let ((.cse0 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (select (select (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) (+ |c_ULTIMATE.start_main_~tail~0#1.offset| 4) v_ArrVal_859)) |v_ULTIMATE.start_main_~p~0#1.base_51| v_ArrVal_860) |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_863) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_854) |v_ULTIMATE.start_main_~p~0#1.base_51| v_ArrVal_856) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_853) |v_ULTIMATE.start_main_~p~0#1.base_51| v_ArrVal_858) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0))) 21))) is different from false [2023-11-29 06:25:05,277 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 06:25:05,286 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:25:05,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 70 treesize of output 76 [2023-11-29 06:25:05,297 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:25:05,297 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 58 [2023-11-29 06:25:05,311 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:25:05,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 264 treesize of output 215 [2023-11-29 06:25:05,324 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:25:05,324 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 182 treesize of output 152 [2023-11-29 06:25:05,384 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:25:05,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 923 treesize of output 904 [2023-11-29 06:25:05,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:25:05,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2418 treesize of output 2243 [2023-11-29 06:25:05,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 424 treesize of output 364 [2023-11-29 06:25:05,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 472 treesize of output 424 [2023-11-29 06:25:05,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 193 [2023-11-29 06:25:05,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 285 treesize of output 261 [2023-11-29 06:25:05,643 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:25:05,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 222 treesize of output 238 [2023-11-29 06:25:05,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:25:05,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 214 treesize of output 222 [2023-11-29 06:25:12,539 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2023-11-29 06:25:12,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443178774] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:25:12,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 06:25:12,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 19 [2023-11-29 06:25:12,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414174439] [2023-11-29 06:25:12,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 06:25:12,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 06:25:12,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 06:25:12,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 06:25:12,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=231, Unknown=3, NotChecked=96, Total=380 [2023-11-29 06:25:12,542 INFO L87 Difference]: Start difference. First operand 222 states and 327 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:25:13,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:25:13,506 INFO L93 Difference]: Finished difference Result 445 states and 651 transitions. [2023-11-29 06:25:13,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-29 06:25:13,506 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-29 06:25:13,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:25:13,509 INFO L225 Difference]: With dead ends: 445 [2023-11-29 06:25:13,509 INFO L226 Difference]: Without dead ends: 286 [2023-11-29 06:25:13,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=204, Invalid=797, Unknown=3, NotChecked=186, Total=1190 [2023-11-29 06:25:13,511 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 137 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:25:13,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 206 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 275 Invalid, 0 Unknown, 300 Unchecked, 0.4s Time] [2023-11-29 06:25:13,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-29 06:25:13,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 222. [2023-11-29 06:25:13,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.4796380090497738) internal successors, (327), 221 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:25:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 327 transitions. [2023-11-29 06:25:13,538 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 327 transitions. Word has length 23 [2023-11-29 06:25:13,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:25:13,538 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 327 transitions. [2023-11-29 06:25:13,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 19 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:25:13,539 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 327 transitions. [2023-11-29 06:25:13,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:25:13,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:25:13,540 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:25:13,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-29 06:25:13,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 06:25:13,741 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:25:13,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:25:13,742 INFO L85 PathProgramCache]: Analyzing trace with hash 2079439281, now seen corresponding path program 3 times [2023-11-29 06:25:13,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 06:25:13,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674363283] [2023-11-29 06:25:13,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:25:13,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 06:25:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:25:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:14,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 06:25:14,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674363283] [2023-11-29 06:25:14,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674363283] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 06:25:14,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573386495] [2023-11-29 06:25:14,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:25:14,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 06:25:14,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:25:14,253 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 06:25:14,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 06:25:14,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:25:14,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:25:14,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 44 conjunts are in the unsatisfiable core [2023-11-29 06:25:14,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:25:14,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 06:25:14,519 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2023-11-29 06:25:14,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 11 [2023-11-29 06:25:14,529 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-29 06:25:14,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-11-29 06:25:14,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 19 [2023-11-29 06:25:14,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 06:25:14,704 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 06:25:14,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 32 [2023-11-29 06:25:14,852 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 06:25:14,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 35 [2023-11-29 06:25:14,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 06:25:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:25:14,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:25:14,950 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|)) (.cse1 (+ |c_ULTIMATE.start_main_~p~0#1.offset| 4))) (let ((.cse0 (select .cse3 .cse1)) (.cse2 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base|))) (and (forall ((v_ArrVal_960 (Array Int Int))) (or (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base| v_ArrVal_960) .cse0) (+ (select v_ArrVal_960 .cse1) 4)) 0) (not (= (store .cse2 |c_ULTIMATE.start_main_~p~0#1.offset| (select v_ArrVal_960 |c_ULTIMATE.start_main_~p~0#1.offset|)) v_ArrVal_960)))) (forall ((v_ArrVal_958 Int)) (= 0 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~p~0#1.offset| v_ArrVal_958)) .cse0) (+ (select .cse2 .cse1) 4))))))) is different from false [2023-11-29 06:25:15,017 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_~list~0#1.offset| 4))) (let ((.cse2 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|)) (.cse1 (select .cse0 .cse3))) (and (forall ((v_ArrVal_958 Int)) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base| (store .cse0 |c_ULTIMATE.start_main_~list~0#1.offset| v_ArrVal_958)) .cse1) (+ (select .cse2 .cse3) 4)) 0)) (forall ((v_ArrVal_960 (Array Int Int))) (or (not (= (store .cse2 |c_ULTIMATE.start_main_~list~0#1.offset| (select v_ArrVal_960 |c_ULTIMATE.start_main_~list~0#1.offset|)) v_ArrVal_960)) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_960) .cse1) (+ 4 (select v_ArrVal_960 .cse3))) 0)))))) is different from false [2023-11-29 06:25:15,336 INFO L349 Elim1Store]: treesize reduction 140, result has 36.1 percent of original size [2023-11-29 06:25:15,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 1198 treesize of output 1209 [2023-11-29 06:25:17,630 INFO L349 Elim1Store]: treesize reduction 575, result has 49.9 percent of original size [2023-11-29 06:25:17,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 15 select indices, 15 select index equivalence classes, 1 disjoint index pairs (out of 105 index pairs), introduced 18 new quantified variables, introduced 104 case distinctions, treesize of input 293930 treesize of output 284075 [2023-11-29 06:25:22,626 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:25:22,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 4939 treesize of output 4935 [2023-11-29 06:35:38,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-29 06:35:38,208 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-29 06:35:38,209 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 06:35:38,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 06:35:38,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 06:35:38,410 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:110) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 76 more [2023-11-29 06:35:38,413 INFO L158 Benchmark]: Toolchain (without parser) took 660808.48ms. Allocated memory was 146.8MB in the beginning and 654.3MB in the end (delta: 507.5MB). Free memory was 107.6MB in the beginning and 299.4MB in the end (delta: -191.8MB). Peak memory consumption was 400.5MB. Max. memory is 16.1GB. [2023-11-29 06:35:38,413 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory was 117.3MB in the beginning and 117.1MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 06:35:38,413 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.65ms. Allocated memory is still 146.8MB. Free memory was 107.1MB in the beginning and 89.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 06:35:38,413 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.25ms. Allocated memory is still 146.8MB. Free memory was 89.8MB in the beginning and 88.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:35:38,414 INFO L158 Benchmark]: Boogie Preprocessor took 54.66ms. Allocated memory is still 146.8MB. Free memory was 88.2MB in the beginning and 85.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 06:35:38,414 INFO L158 Benchmark]: RCFGBuilder took 417.39ms. Allocated memory is still 146.8MB. Free memory was 85.6MB in the beginning and 72.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-29 06:35:38,414 INFO L158 Benchmark]: TraceAbstraction took 659871.78ms. Allocated memory was 146.8MB in the beginning and 654.3MB in the end (delta: 507.5MB). Free memory was 71.4MB in the beginning and 299.4MB in the end (delta: -227.9MB). Peak memory consumption was 362.8MB. Max. memory is 16.1GB. [2023-11-29 06:35:38,415 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 146.8MB. Free memory was 117.3MB in the beginning and 117.1MB in the end (delta: 184.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.65ms. Allocated memory is still 146.8MB. Free memory was 107.1MB in the beginning and 89.8MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.25ms. Allocated memory is still 146.8MB. Free memory was 89.8MB in the beginning and 88.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.66ms. Allocated memory is still 146.8MB. Free memory was 88.2MB in the beginning and 85.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 417.39ms. Allocated memory is still 146.8MB. Free memory was 85.6MB in the beginning and 72.1MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 659871.78ms. Allocated memory was 146.8MB in the beginning and 654.3MB in the end (delta: 507.5MB). Free memory was 71.4MB in the beginning and 299.4MB in the end (delta: -227.9MB). Peak memory consumption was 362.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-data/running_example.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 06:35:40,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 06:35:40,214 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-29 06:35:40,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 06:35:40,228 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 06:35:40,256 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 06:35:40,256 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 06:35:40,257 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 06:35:40,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 06:35:40,258 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 06:35:40,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 06:35:40,260 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 06:35:40,261 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 06:35:40,261 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 06:35:40,262 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 06:35:40,262 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 06:35:40,263 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 06:35:40,264 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 06:35:40,264 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 06:35:40,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 06:35:40,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 06:35:40,266 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 06:35:40,266 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 06:35:40,267 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 06:35:40,267 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 06:35:40,267 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 06:35:40,268 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 06:35:40,268 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 06:35:40,268 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 06:35:40,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 06:35:40,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 06:35:40,269 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 06:35:40,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 06:35:40,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:35:40,270 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 06:35:40,271 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 06:35:40,271 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 06:35:40,271 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 06:35:40,271 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 06:35:40,272 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 06:35:40,272 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 06:35:40,272 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 06:35:40,272 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 06:35:40,272 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 06:35:40,273 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 06:35:40,273 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 318c7aa22aeecc0174739978e9fb15d261281003454726c8705d95a97106063f [2023-11-29 06:35:40,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 06:35:40,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 06:35:40,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 06:35:40,582 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 06:35:40,583 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 06:35:40,584 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/heap-data/running_example.i [2023-11-29 06:35:43,348 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 06:35:43,595 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 06:35:43,596 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/sv-benchmarks/c/heap-data/running_example.i [2023-11-29 06:35:43,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/data/78b8d18d3/94c6319b4998404ca6b9517aad3ae206/FLAG72c0b18db [2023-11-29 06:35:43,624 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/data/78b8d18d3/94c6319b4998404ca6b9517aad3ae206 [2023-11-29 06:35:43,626 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 06:35:43,628 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 06:35:43,629 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 06:35:43,629 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 06:35:43,634 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 06:35:43,635 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:35:43" (1/1) ... [2023-11-29 06:35:43,636 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26fd7efa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:43, skipping insertion in model container [2023-11-29 06:35:43,636 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:35:43" (1/1) ... [2023-11-29 06:35:43,678 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 06:35:43,943 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_37b052f6-c2e9-4915-b562-7cab933853df/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2023-11-29 06:35:43,951 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:35:43,965 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 06:35:44,002 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_37b052f6-c2e9-4915-b562-7cab933853df/sv-benchmarks/c/heap-data/running_example.i[23610,23623] [2023-11-29 06:35:44,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 06:35:44,033 INFO L206 MainTranslator]: Completed translation [2023-11-29 06:35:44,034 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44 WrapperNode [2023-11-29 06:35:44,034 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 06:35:44,035 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 06:35:44,035 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 06:35:44,035 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 06:35:44,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,058 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,078 INFO L138 Inliner]: procedures = 124, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 73 [2023-11-29 06:35:44,078 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 06:35:44,079 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 06:35:44,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 06:35:44,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 06:35:44,090 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,090 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,095 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,111 INFO L175 MemorySlicer]: Split 15 memory accesses to 2 slices as follows [2, 13]. 87 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2023-11-29 06:35:44,111 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,112 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,122 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,126 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,129 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,131 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 06:35:44,136 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 06:35:44,136 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 06:35:44,137 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 06:35:44,138 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (1/1) ... [2023-11-29 06:35:44,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 06:35:44,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 06:35:44,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 06:35:44,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 06:35:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 06:35:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 06:35:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 06:35:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 06:35:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 06:35:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 06:35:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 06:35:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 06:35:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 06:35:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 06:35:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 06:35:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 06:35:44,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 06:35:44,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 06:35:44,340 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 06:35:44,342 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 06:35:44,584 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 06:35:44,610 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 06:35:44,610 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 06:35:44,611 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:35:44 BoogieIcfgContainer [2023-11-29 06:35:44,611 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 06:35:44,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 06:35:44,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 06:35:44,617 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 06:35:44,617 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:35:43" (1/3) ... [2023-11-29 06:35:44,618 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f71c21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:35:44, skipping insertion in model container [2023-11-29 06:35:44,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:35:44" (2/3) ... [2023-11-29 06:35:44,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f71c21d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:35:44, skipping insertion in model container [2023-11-29 06:35:44,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:35:44" (3/3) ... [2023-11-29 06:35:44,620 INFO L112 eAbstractionObserver]: Analyzing ICFG running_example.i [2023-11-29 06:35:44,639 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 06:35:44,639 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 06:35:44,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 06:35:44,695 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=PETRI_NET, 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;@6f20efa3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 06:35:44,695 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 06:35:44,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:44,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 06:35:44,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:44,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:44,707 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:44,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:44,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1646938671, now seen corresponding path program 1 times [2023-11-29 06:35:44,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:35:44,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957606513] [2023-11-29 06:35:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:44,726 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:44,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:35:44,753 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:35:44,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 06:35:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:44,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 06:35:44,851 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:44,866 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:35:44,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:35:44,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957606513] [2023-11-29 06:35:44,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957606513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:44,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:44,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 06:35:44,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580471204] [2023-11-29 06:35:44,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:44,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 06:35:44,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:35:44,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 06:35:44,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:35:44,904 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 15 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:44,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:44,939 INFO L93 Difference]: Finished difference Result 25 states and 41 transitions. [2023-11-29 06:35:44,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 06:35:44,943 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-29 06:35:44,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:44,949 INFO L225 Difference]: With dead ends: 25 [2023-11-29 06:35:44,949 INFO L226 Difference]: Without dead ends: 14 [2023-11-29 06:35:44,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 06:35:44,954 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:44,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 06:35:44,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2023-11-29 06:35:44,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2023-11-29 06:35:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:44,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions. [2023-11-29 06:35:44,981 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 7 [2023-11-29 06:35:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:44,981 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 19 transitions. [2023-11-29 06:35:44,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:44,982 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions. [2023-11-29 06:35:44,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 06:35:44,982 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:44,982 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:44,989 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 06:35:45,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:45,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:45,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:45,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1234098151, now seen corresponding path program 1 times [2023-11-29 06:35:45,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:35:45,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467054562] [2023-11-29 06:35:45,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:45,186 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:45,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:35:45,187 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:35:45,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 06:35:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:45,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 06:35:45,260 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:45,341 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 [2023-11-29 06:35:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:45,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:35:45,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:35:45,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467054562] [2023-11-29 06:35:45,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467054562] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:45,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:45,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:35:45,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492838281] [2023-11-29 06:35:45,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:45,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:35:45,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:35:45,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:35:45,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:35:45,417 INFO L87 Difference]: Start difference. First operand 14 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:45,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:45,890 INFO L93 Difference]: Finished difference Result 34 states and 48 transitions. [2023-11-29 06:35:45,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:35:45,891 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-29 06:35:45,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:45,893 INFO L225 Difference]: With dead ends: 34 [2023-11-29 06:35:45,893 INFO L226 Difference]: Without dead ends: 25 [2023-11-29 06:35:45,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:45,895 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:45,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 06:35:45,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-11-29 06:35:45,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2023-11-29 06:35:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:45,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-11-29 06:35:45,903 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2023-11-29 06:35:45,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:45,904 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-11-29 06:35:45,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:45,904 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-11-29 06:35:45,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-29 06:35:45,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:45,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:45,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 06:35:46,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:46,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:46,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:46,109 INFO L85 PathProgramCache]: Analyzing trace with hash -825321697, now seen corresponding path program 1 times [2023-11-29 06:35:46,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:35:46,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [953708866] [2023-11-29 06:35:46,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:46,110 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:46,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:35:46,111 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:35:46,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 06:35:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:46,226 INFO L262 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:35:46,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:46,254 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 06:35:46,274 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 [2023-11-29 06:35:46,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 18 [2023-11-29 06:35:46,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 06:35:46,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2023-11-29 06:35:46,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:46,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:35:46,656 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_59 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~p~0#1.base_19| (_ BitVec 32)) (v_ArrVal_60 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~tail~0#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse0 (select v_ArrVal_59 .cse0))) v_ArrVal_59)) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_19|))) (bvsge (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_59) |v_ULTIMATE.start_main_~p~0#1.base_19| v_ArrVal_60) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32)))) is different from false [2023-11-29 06:35:46,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-29 06:35:46,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:35:46,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [953708866] [2023-11-29 06:35:46,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [953708866] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:35:46,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:35:46,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-29 06:35:46,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374465052] [2023-11-29 06:35:46,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:35:46,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 06:35:46,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:35:46,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 06:35:46,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=40, Unknown=1, NotChecked=12, Total=72 [2023-11-29 06:35:46,747 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:47,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:47,974 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2023-11-29 06:35:47,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:35:47,975 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-29 06:35:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:47,976 INFO L225 Difference]: With dead ends: 64 [2023-11-29 06:35:47,977 INFO L226 Difference]: Without dead ends: 55 [2023-11-29 06:35:47,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=135, Unknown=1, NotChecked=26, Total=240 [2023-11-29 06:35:47,979 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 67 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:47,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 80 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 84 Invalid, 0 Unknown, 64 Unchecked, 1.0s Time] [2023-11-29 06:35:47,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-29 06:35:47,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34. [2023-11-29 06:35:47,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2023-11-29 06:35:47,991 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 13 [2023-11-29 06:35:47,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:47,992 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2023-11-29 06:35:47,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:47,992 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2023-11-29 06:35:47,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 06:35:47,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:47,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:47,997 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-29 06:35:48,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:48,194 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:48,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:48,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1998928062, now seen corresponding path program 1 times [2023-11-29 06:35:48,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:35:48,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011907882] [2023-11-29 06:35:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:48,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:48,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:35:48,197 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:35:48,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 06:35:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:48,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 06:35:48,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:48,301 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 06:35:48,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-29 06:35:48,446 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:35:48,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:35:48,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:48,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:35:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:48,639 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:35:48,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011907882] [2023-11-29 06:35:48,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011907882] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:35:48,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:35:48,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 06:35:48,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546073900] [2023-11-29 06:35:48,641 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:35:48,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 06:35:48,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:35:48,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 06:35:48,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:48,643 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:49,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:49,589 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2023-11-29 06:35:49,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 06:35:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 06:35:49,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:49,592 INFO L225 Difference]: With dead ends: 70 [2023-11-29 06:35:49,592 INFO L226 Difference]: Without dead ends: 61 [2023-11-29 06:35:49,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 06:35:49,593 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 31 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:49,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 63 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 06:35:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-29 06:35:49,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2023-11-29 06:35:49,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.4339622641509433) internal successors, (76), 53 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:49,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 76 transitions. [2023-11-29 06:35:49,609 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 76 transitions. Word has length 15 [2023-11-29 06:35:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:49,610 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 76 transitions. [2023-11-29 06:35:49,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 76 transitions. [2023-11-29 06:35:49,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:35:49,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:49,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:49,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-11-29 06:35:49,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:49,812 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:49,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1187174786, now seen corresponding path program 1 times [2023-11-29 06:35:49,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:35:49,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009396967] [2023-11-29 06:35:49,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:49,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:49,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:35:49,814 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:35:49,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 06:35:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:49,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 06:35:49,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:49,883 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 [2023-11-29 06:35:49,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-29 06:35:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:50,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:35:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:50,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:35:50,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009396967] [2023-11-29 06:35:50,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009396967] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:35:50,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:35:50,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 06:35:50,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402284759] [2023-11-29 06:35:50,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:35:50,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:35:50,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:35:50,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:35:50,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-29 06:35:50,197 INFO L87 Difference]: Start difference. First operand 54 states and 76 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:51,914 INFO L93 Difference]: Finished difference Result 93 states and 125 transitions. [2023-11-29 06:35:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 06:35:51,915 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 06:35:51,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:51,916 INFO L225 Difference]: With dead ends: 93 [2023-11-29 06:35:51,916 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 06:35:51,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=258, Unknown=0, NotChecked=0, Total=380 [2023-11-29 06:35:51,917 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 77 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:51,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 96 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-29 06:35:51,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 06:35:51,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 72. [2023-11-29 06:35:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.408450704225352) internal successors, (100), 71 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 100 transitions. [2023-11-29 06:35:51,929 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 100 transitions. Word has length 17 [2023-11-29 06:35:51,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:51,930 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 100 transitions. [2023-11-29 06:35:51,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:51,930 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 100 transitions. [2023-11-29 06:35:51,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:35:51,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:51,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:51,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 06:35:52,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:52,131 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:52,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:52,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1996523334, now seen corresponding path program 1 times [2023-11-29 06:35:52,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:35:52,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174871311] [2023-11-29 06:35:52,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:35:52,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:52,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:35:52,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:35:52,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 06:35:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:35:52,200 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 06:35:52,202 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:52,205 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 [2023-11-29 06:35:52,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 06:35:52,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 06:35:52,249 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:35:52,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174871311] [2023-11-29 06:35:52,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174871311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 06:35:52,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 06:35:52,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 06:35:52,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210164428] [2023-11-29 06:35:52,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 06:35:52,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 06:35:52,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:35:52,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 06:35:52,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 06:35:52,251 INFO L87 Difference]: Start difference. First operand 72 states and 100 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:52,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:35:52,762 INFO L93 Difference]: Finished difference Result 99 states and 136 transitions. [2023-11-29 06:35:52,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 06:35:52,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 06:35:52,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:35:52,768 INFO L225 Difference]: With dead ends: 99 [2023-11-29 06:35:52,768 INFO L226 Difference]: Without dead ends: 73 [2023-11-29 06:35:52,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 06:35:52,769 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 10 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:35:52,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 41 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 06:35:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-29 06:35:52,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2023-11-29 06:35:52,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.3943661971830985) internal successors, (99), 71 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:52,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 99 transitions. [2023-11-29 06:35:52,784 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 99 transitions. Word has length 17 [2023-11-29 06:35:52,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:35:52,784 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 99 transitions. [2023-11-29 06:35:52,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:52,784 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 99 transitions. [2023-11-29 06:35:52,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 06:35:52,785 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:35:52,785 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:35:52,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 06:35:52,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:52,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:35:52,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:35:52,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1926163675, now seen corresponding path program 2 times [2023-11-29 06:35:52,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:35:52,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005524107] [2023-11-29 06:35:52,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:35:52,987 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:35:52,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:35:52,988 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:35:52,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 06:35:53,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:35:53,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:35:53,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 26 conjunts are in the unsatisfiable core [2023-11-29 06:35:53,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:35:53,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 06:35:53,139 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 [2023-11-29 06:35:53,243 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:35:53,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 06:35:53,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-11-29 06:35:53,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:35:53,349 INFO L349 Elim1Store]: treesize reduction 14, result has 39.1 percent of original size [2023-11-29 06:35:53,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-29 06:35:53,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-29 06:35:53,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-29 06:35:53,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:35:53,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:35:53,521 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 38 treesize of output 22 [2023-11-29 06:35:53,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:53,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:35:53,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:35:53,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2023-11-29 06:35:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:35:54,121 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:35:54,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005524107] [2023-11-29 06:35:54,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005524107] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:35:54,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:35:54,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 06:35:54,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887925957] [2023-11-29 06:35:54,122 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:35:54,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 06:35:54,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:35:54,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 06:35:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=73, Unknown=10, NotChecked=0, Total=110 [2023-11-29 06:35:54,123 INFO L87 Difference]: Start difference. First operand 72 states and 99 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:35:57,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 06:35:59,145 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~p~0#1.base|) (_ bv0 32)))) (and (= |c_ULTIMATE.start_main_~p~0#1.offset| (_ bv0 32)) (not (bvslt .cse0 (_ bv10 32))) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_27| (_ BitVec 32)) (v_arrayElimArr_3 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_178 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_13| (_ BitVec 32)) (v_ArrVal_184 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select v_arrayElimArr_3 (_ bv0 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_13|))) (bvsgt .cse1 (_ bv20 32)) (bvslt .cse1 (_ bv10 32)) (bvsge (select (select (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~tail~0#1.offset|) v_ArrVal_178)) |v_ULTIMATE.start_main_~tail~0#1.base_13| v_ArrVal_184) |v_ULTIMATE.start_main_~p~0#1.base_27| v_arrayElimArr_3) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32))))) (not (= |c_ULTIMATE.start_main_~list~0#1.base| |c_ULTIMATE.start_main_~tail~0#1.base|)) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) |c_ULTIMATE.start_main_#t~short10#1| (not (bvsgt .cse0 (_ bv20 32))) (= (_ bv10 32) (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~list~0#1.base|) (_ bv0 32))))) is different from false [2023-11-29 06:35:59,222 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int#1| |c_ULTIMATE.start_main_~list~0#1.base|) (_ bv0 32)))) (and (not (bvslt .cse0 (_ bv10 32))) (forall ((|v_ULTIMATE.start_main_~p~0#1.base_27| (_ BitVec 32)) (v_arrayElimArr_3 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_178 (_ BitVec 32)) (|v_ULTIMATE.start_main_~tail~0#1.base_13| (_ BitVec 32)) (v_ArrVal_184 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select v_arrayElimArr_3 (_ bv0 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_13|))) (bvsgt .cse1 (_ bv20 32)) (bvslt .cse1 (_ bv10 32)) (bvsge (select (select (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~tail~0#1.offset|) v_ArrVal_178)) |v_ULTIMATE.start_main_~tail~0#1.base_13| v_ArrVal_184) |v_ULTIMATE.start_main_~p~0#1.base_27| v_arrayElimArr_3) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv10 32))))) (= |c_ULTIMATE.start_main_~list~0#1.offset| (_ bv0 32)) (not (bvsgt .cse0 (_ bv20 32))))) is different from false [2023-11-29 06:36:02,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:02,271 INFO L93 Difference]: Finished difference Result 116 states and 161 transitions. [2023-11-29 06:36:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 06:36:02,275 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-29 06:36:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:02,276 INFO L225 Difference]: With dead ends: 116 [2023-11-29 06:36:02,276 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 06:36:02,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=112, Invalid=252, Unknown=24, NotChecked=74, Total=462 [2023-11-29 06:36:02,277 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 125 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 20 mSolverCounterUnsat, 22 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 22 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:02,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 117 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 170 Invalid, 22 Unknown, 19 Unchecked, 7.5s Time] [2023-11-29 06:36:02,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 06:36:02,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 80. [2023-11-29 06:36:02,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4050632911392404) internal successors, (111), 79 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:02,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 111 transitions. [2023-11-29 06:36:02,295 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 111 transitions. Word has length 17 [2023-11-29 06:36:02,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:02,295 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 111 transitions. [2023-11-29 06:36:02,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 10 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:02,296 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 111 transitions. [2023-11-29 06:36:02,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-29 06:36:02,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:02,297 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:02,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 06:36:02,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:02,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:02,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:02,498 INFO L85 PathProgramCache]: Analyzing trace with hash 948853192, now seen corresponding path program 1 times [2023-11-29 06:36:02,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:36:02,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675944292] [2023-11-29 06:36:02,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:02,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:02,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:36:02,499 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:36:02,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 06:36:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:02,612 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 06:36:02,615 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:02,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 06:36:02,701 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2023-11-29 06:36:02,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:36:02,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 53 [2023-11-29 06:36:02,722 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 27 treesize of output 1 [2023-11-29 06:36:02,741 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:36:02,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 06:36:02,748 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2023-11-29 06:36:02,765 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 06:36:02,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 68 [2023-11-29 06:36:02,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 42 [2023-11-29 06:36:02,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2023-11-29 06:36:02,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 38 [2023-11-29 06:36:02,991 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 60 treesize of output 36 [2023-11-29 06:36:02,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 20 [2023-11-29 06:36:03,048 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 38 treesize of output 22 [2023-11-29 06:36:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:03,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:03,393 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:03,393 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 57 [2023-11-29 06:36:03,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:03,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 105 [2023-11-29 06:36:03,481 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:03,482 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 78 [2023-11-29 06:36:03,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:03,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 129 [2023-11-29 06:36:03,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:03,559 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 46 [2023-11-29 06:36:03,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:03,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 113 [2023-11-29 06:36:03,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 57 [2023-11-29 06:36:03,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 45 [2023-11-29 06:36:03,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:03,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 50 [2023-11-29 06:36:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:04,225 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:36:04,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675944292] [2023-11-29 06:36:04,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675944292] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:04,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:36:04,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2023-11-29 06:36:04,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910946099] [2023-11-29 06:36:04,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:04,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 06:36:04,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:36:04,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 06:36:04,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=101, Unknown=5, NotChecked=0, Total=132 [2023-11-29 06:36:04,227 INFO L87 Difference]: Start difference. First operand 80 states and 111 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:06,925 INFO L93 Difference]: Finished difference Result 110 states and 150 transitions. [2023-11-29 06:36:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 06:36:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-29 06:36:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:06,927 INFO L225 Difference]: With dead ends: 110 [2023-11-29 06:36:06,927 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 06:36:06,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=44, Invalid=161, Unknown=5, NotChecked=0, Total=210 [2023-11-29 06:36:06,928 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 47 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:06,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 155 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 06:36:06,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 06:36:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2023-11-29 06:36:06,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 90 states have (on average 1.4) internal successors, (126), 90 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:06,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 126 transitions. [2023-11-29 06:36:06,953 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 126 transitions. Word has length 19 [2023-11-29 06:36:06,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:06,954 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 126 transitions. [2023-11-29 06:36:06,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:06,954 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 126 transitions. [2023-11-29 06:36:06,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 06:36:06,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:06,955 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:06,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-29 06:36:07,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:07,156 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:07,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:07,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1247162244, now seen corresponding path program 1 times [2023-11-29 06:36:07,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:36:07,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082103] [2023-11-29 06:36:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:07,157 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:07,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:36:07,157 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:36:07,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 06:36:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:07,234 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-29 06:36:07,236 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:07,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2023-11-29 06:36:07,557 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 40 treesize of output 24 [2023-11-29 06:36:07,586 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:36:07,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:07,975 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-29 06:36:07,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 38 [2023-11-29 06:36:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:36:08,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:36:08,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082103] [2023-11-29 06:36:08,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:08,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:36:08,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-11-29 06:36:08,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679637728] [2023-11-29 06:36:08,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:08,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 06:36:08,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:36:08,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 06:36:08,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-29 06:36:08,006 INFO L87 Difference]: Start difference. First operand 91 states and 126 transitions. Second operand has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:11,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:11,930 INFO L93 Difference]: Finished difference Result 195 states and 264 transitions. [2023-11-29 06:36:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 06:36:11,931 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 06:36:11,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:11,932 INFO L225 Difference]: With dead ends: 195 [2023-11-29 06:36:11,932 INFO L226 Difference]: Without dead ends: 178 [2023-11-29 06:36:11,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2023-11-29 06:36:11,933 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 136 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:11,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 120 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-29 06:36:11,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-29 06:36:11,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 79. [2023-11-29 06:36:11,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.4102564102564104) internal successors, (110), 78 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 110 transitions. [2023-11-29 06:36:11,953 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 110 transitions. Word has length 21 [2023-11-29 06:36:11,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:11,953 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 110 transitions. [2023-11-29 06:36:11,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.75) internal successors, (28), 16 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:11,953 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 110 transitions. [2023-11-29 06:36:11,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 06:36:11,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:11,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:11,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-11-29 06:36:12,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:12,159 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:12,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 437813696, now seen corresponding path program 1 times [2023-11-29 06:36:12,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:36:12,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595564070] [2023-11-29 06:36:12,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:12,161 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:12,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:36:12,162 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:36:12,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 06:36:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:12,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 06:36:12,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:12,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 20 [2023-11-29 06:36:13,310 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 31 treesize of output 19 [2023-11-29 06:36:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:36:13,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:15,117 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-11-29 06:36:15,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 33 [2023-11-29 06:36:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 06:36:15,143 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:36:15,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595564070] [2023-11-29 06:36:15,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595564070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:15,143 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:36:15,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2023-11-29 06:36:15,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767309085] [2023-11-29 06:36:15,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:15,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 06:36:15,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:36:15,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 06:36:15,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2023-11-29 06:36:15,145 INFO L87 Difference]: Start difference. First operand 79 states and 110 transitions. Second operand has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:21,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:21,933 INFO L93 Difference]: Finished difference Result 187 states and 255 transitions. [2023-11-29 06:36:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-29 06:36:21,943 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 06:36:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:21,943 INFO L225 Difference]: With dead ends: 187 [2023-11-29 06:36:21,943 INFO L226 Difference]: Without dead ends: 127 [2023-11-29 06:36:21,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2023-11-29 06:36:21,945 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 80 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:21,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 91 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-29 06:36:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-29 06:36:21,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 89. [2023-11-29 06:36:21,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 88 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:21,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 130 transitions. [2023-11-29 06:36:21,955 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 130 transitions. Word has length 21 [2023-11-29 06:36:21,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:21,956 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 130 transitions. [2023-11-29 06:36:21,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.9333333333333333) internal successors, (29), 15 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:21,956 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 130 transitions. [2023-11-29 06:36:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 06:36:21,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:21,957 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:21,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 06:36:22,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:22,157 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:22,158 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:22,158 INFO L85 PathProgramCache]: Analyzing trace with hash 508175277, now seen corresponding path program 1 times [2023-11-29 06:36:22,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:36:22,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1391505580] [2023-11-29 06:36:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 06:36:22,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:22,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:36:22,159 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:36:22,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 06:36:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 06:36:22,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 06:36:22,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:22,337 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 [2023-11-29 06:36:22,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 06:36:22,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-11-29 06:36:22,471 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 06:36:22,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 06:36:22,507 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-29 06:36:22,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 06:36:22,613 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 06:36:22,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 06:36:22,653 INFO L349 Elim1Store]: treesize reduction 19, result has 13.6 percent of original size [2023-11-29 06:36:22,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 06:36:22,673 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:36:22,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-29 06:36:22,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2023-11-29 06:36:22,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:36:22,797 INFO L349 Elim1Store]: treesize reduction 14, result has 39.1 percent of original size [2023-11-29 06:36:22,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-11-29 06:36:22,805 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2023-11-29 06:36:22,928 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 38 treesize of output 22 [2023-11-29 06:36:22,949 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:22,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:23,009 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:23,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2023-11-29 06:36:23,025 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_387 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~p~0#1.base_40| (_ BitVec 32)) (v_arrayElimArr_11 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_11 (_ bv0 32)))) (or (bvsle (select (select (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_387) |v_ULTIMATE.start_main_~p~0#1.base_40| v_arrayElimArr_11) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (bvsgt .cse0 (_ bv20 32)) (bvslt .cse0 (_ bv10 32))))) is different from false [2023-11-29 06:36:23,090 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tail~0#1.base_18| (_ BitVec 32)) (v_ArrVal_387 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_384 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~p~0#1.base_40| (_ BitVec 32)) (v_arrayElimArr_11 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select v_arrayElimArr_11 (_ bv0 32)))) (or (bvsle (select (select (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_384) |v_ULTIMATE.start_main_~tail~0#1.base_18| v_ArrVal_387) |v_ULTIMATE.start_main_~p~0#1.base_40| v_arrayElimArr_11) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_18|) (_ bv0 1))) (bvsgt .cse0 (_ bv20 32)) (bvslt .cse0 (_ bv10 32))))) is different from false [2023-11-29 06:36:23,220 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~tail~0#1.base_18| (_ BitVec 32)) (v_ArrVal_387 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~tail~0#1.base_19| (_ BitVec 32)) (v_ArrVal_379 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_384 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~p~0#1.base_40| (_ BitVec 32)) (v_ArrVal_381 (_ BitVec 1)) (v_arrayElimArr_11 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select v_arrayElimArr_11 (_ bv0 32)))) (or (not (= (select (store |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_19| v_ArrVal_381) |v_ULTIMATE.start_main_~tail~0#1.base_18|) (_ bv0 1))) (not (= v_ArrVal_379 (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~tail~0#1.offset|))) (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse0 (select v_ArrVal_379 .cse0))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~tail~0#1.base_19|))) (bvsgt .cse1 (_ bv20 32)) (bvsle (select (select (store (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_379) |v_ULTIMATE.start_main_~tail~0#1.base_19| v_ArrVal_384) |v_ULTIMATE.start_main_~tail~0#1.base_18| v_ArrVal_387) |v_ULTIMATE.start_main_~p~0#1.base_40| v_arrayElimArr_11) |c_ULTIMATE.start_main_~list~0#1.base|) |c_ULTIMATE.start_main_~list~0#1.offset|) (_ bv20 32)) (bvslt .cse1 (_ bv10 32))))) is different from false [2023-11-29 06:36:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 21 not checked. [2023-11-29 06:36:23,406 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:36:23,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1391505580] [2023-11-29 06:36:23,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1391505580] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:23,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:36:23,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-29 06:36:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881400734] [2023-11-29 06:36:23,406 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:23,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 06:36:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:36:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 06:36:23,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=67, Unknown=3, NotChecked=54, Total=156 [2023-11-29 06:36:23,407 INFO L87 Difference]: Start difference. First operand 89 states and 130 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:24,775 INFO L93 Difference]: Finished difference Result 188 states and 271 transitions. [2023-11-29 06:36:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 06:36:24,779 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-11-29 06:36:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:24,780 INFO L225 Difference]: With dead ends: 188 [2023-11-29 06:36:24,780 INFO L226 Difference]: Without dead ends: 140 [2023-11-29 06:36:24,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=166, Unknown=3, NotChecked=90, Total=342 [2023-11-29 06:36:24,781 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 58 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 192 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:24,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 90 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 97 Invalid, 0 Unknown, 192 Unchecked, 1.1s Time] [2023-11-29 06:36:24,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-11-29 06:36:24,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2023-11-29 06:36:24,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.4594594594594594) internal successors, (108), 74 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 108 transitions. [2023-11-29 06:36:24,791 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 108 transitions. Word has length 21 [2023-11-29 06:36:24,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:24,791 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 108 transitions. [2023-11-29 06:36:24,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:24,791 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 108 transitions. [2023-11-29 06:36:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-29 06:36:24,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:24,792 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:24,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 06:36:24,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:24,993 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:24,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:24,993 INFO L85 PathProgramCache]: Analyzing trace with hash -410437298, now seen corresponding path program 2 times [2023-11-29 06:36:24,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:36:24,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780033099] [2023-11-29 06:36:24,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 06:36:24,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:24,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:36:24,994 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:36:24,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 06:36:25,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 06:36:25,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:36:25,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-29 06:36:25,146 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:25,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 06:36:25,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 06:36:25,229 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-29 06:36:25,253 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 06:36:25,253 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2023-11-29 06:36:25,293 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 06:36:25,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 06:36:25,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 16 [2023-11-29 06:36:25,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:36:25,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:36:25,600 INFO L349 Elim1Store]: treesize reduction 44, result has 10.2 percent of original size [2023-11-29 06:36:25,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 124 treesize of output 93 [2023-11-29 06:36:25,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2023-11-29 06:36:25,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 20 [2023-11-29 06:36:25,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:36:25,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 06:36:25,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 22 [2023-11-29 06:36:25,716 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 06:36:25,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 18 [2023-11-29 06:36:25,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-29 06:36:25,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 28 [2023-11-29 06:36:25,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 22 [2023-11-29 06:36:25,956 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 40 treesize of output 24 [2023-11-29 06:36:25,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 06:36:26,011 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 38 treesize of output 22 [2023-11-29 06:36:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:26,032 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:26,330 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~p~0#1.base_46| (_ BitVec 32)) (v_ArrVal_455 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_456 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_450 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~p~0#1.offset_46| (_ BitVec 32)) (v_ArrVal_451 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_457 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~tail~0#1.offset|))) (or (bvsge (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store (store (store |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_455) |v_ULTIMATE.start_main_~p~0#1.base_46| v_ArrVal_457) |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_459) (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~tail~0#1.base| v_ArrVal_450) |v_ULTIMATE.start_main_~p~0#1.base_46| v_ArrVal_456) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0)) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~tail~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse1 |v_ULTIMATE.start_main_~p~0#1.offset_46|)) |v_ULTIMATE.start_main_~p~0#1.base_46| v_ArrVal_451) |c_ULTIMATE.start_main_~list~0#1.base|) .cse0))) (_ bv10 32)) (not (= v_ArrVal_455 (store (select |c_#memory_int#1| |c_ULTIMATE.start_main_~tail~0#1.base|) .cse1 (select v_ArrVal_455 .cse1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_~p~0#1.base_46|)))))) is different from false [2023-11-29 06:36:26,582 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:26,583 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 64 [2023-11-29 06:36:26,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:26,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 627 treesize of output 464 [2023-11-29 06:36:26,749 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:26,749 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 206 treesize of output 176 [2023-11-29 06:36:26,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:26,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 4670 treesize of output 4660 [2023-11-29 06:36:27,005 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:27,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 1118 treesize of output 1028 [2023-11-29 06:36:27,122 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:27,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5160 treesize of output 4781 [2023-11-29 06:36:27,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 323 treesize of output 291 [2023-11-29 06:36:27,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 332 treesize of output 264 [2023-11-29 06:36:27,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:27,442 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 670 treesize of output 670 [2023-11-29 06:36:27,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:27,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 638 treesize of output 606 [2023-11-29 06:36:27,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 399 treesize of output 367 [2023-11-29 06:36:27,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 371 treesize of output 247 [2023-11-29 06:36:28,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 06:36:28,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 06:36:29,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 06:36:29,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 06:36:36,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2023-11-29 06:36:36,545 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 06:36:36,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780033099] [2023-11-29 06:36:36,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780033099] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 06:36:36,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 06:36:36,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2023-11-29 06:36:36,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841030365] [2023-11-29 06:36:36,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 06:36:36,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 06:36:36,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 06:36:36,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 06:36:36,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=120, Unknown=8, NotChecked=22, Total=182 [2023-11-29 06:36:36,546 INFO L87 Difference]: Start difference. First operand 75 states and 108 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:38,061 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~p~0#1.base|) (_ bv4 32)))) (let ((.cse1 (select (select |c_#memory_int#1| .cse0) (_ bv0 32)))) (and (not (= |c_ULTIMATE.start_main_~p~0#1.base| .cse0)) (= |c_ULTIMATE.start_main_~p~0#1.offset| (_ bv0 32)) (not (bvsgt .cse1 (_ bv20 32))) (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~p~0#1.base|) (_ bv4 32)) (_ bv0 32)) (forall ((v_ArrVal_459 (Array (_ BitVec 32) (_ BitVec 32)))) (bvsge (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~list~0#1.offset|))) (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_main_~list~0#1.base| v_ArrVal_459) (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~list~0#1.base|) .cse2)) (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~list~0#1.base|) .cse2))) (_ bv10 32))) (not (bvslt .cse1 (_ bv10 32)))))) is different from false [2023-11-29 06:36:38,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 06:36:38,525 INFO L93 Difference]: Finished difference Result 151 states and 220 transitions. [2023-11-29 06:36:38,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 06:36:38,526 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-29 06:36:38,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 06:36:38,527 INFO L225 Difference]: With dead ends: 151 [2023-11-29 06:36:38,527 INFO L226 Difference]: Without dead ends: 103 [2023-11-29 06:36:38,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=69, Invalid=236, Unknown=9, NotChecked=66, Total=380 [2023-11-29 06:36:38,528 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 50 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 06:36:38,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 116 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 162 Invalid, 0 Unknown, 66 Unchecked, 1.6s Time] [2023-11-29 06:36:38,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-29 06:36:38,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 79. [2023-11-29 06:36:38,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 78 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:38,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2023-11-29 06:36:38,542 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 23 [2023-11-29 06:36:38,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 06:36:38,542 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2023-11-29 06:36:38,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 06:36:38,542 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2023-11-29 06:36:38,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 06:36:38,543 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 06:36:38,543 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 06:36:38,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 06:36:38,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:38,743 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 06:36:38,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 06:36:38,744 INFO L85 PathProgramCache]: Analyzing trace with hash 2079439281, now seen corresponding path program 3 times [2023-11-29 06:36:38,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 06:36:38,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969189981] [2023-11-29 06:36:38,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 06:36:38,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 06:36:38,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 06:36:38,746 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 06:36:38,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_37b052f6-c2e9-4915-b562-7cab933853df/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 06:36:38,924 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-29 06:36:38,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 06:36:38,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 06:36:38,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 06:36:38,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-29 06:36:39,043 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-29 06:36:39,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 19 [2023-11-29 06:36:39,064 INFO L349 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2023-11-29 06:36:39,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2023-11-29 06:36:39,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 11 [2023-11-29 06:36:39,366 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 06:36:39,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 32 [2023-11-29 06:36:39,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 06:36:39,614 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 06:36:39,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 35 [2023-11-29 06:36:39,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 06:36:39,692 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 06:36:39,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 06:36:40,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:36:40,615 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 234 treesize of output 194 [2023-11-29 06:37:06,806 WARN L293 SmtUtils]: Spent 26.17s on a formula simplification. DAG size of input: 64 DAG size of output: 50 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-29 06:37:06,806 INFO L349 Elim1Store]: treesize reduction 194, result has 36.0 percent of original size [2023-11-29 06:37:06,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 732 treesize of output 749 [2023-11-29 06:37:10,555 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:10,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 36 case distinctions, treesize of input 2577 treesize of output 2531 [2023-11-29 06:37:11,110 INFO L224 Elim1Store]: Index analysis took 123 ms [2023-11-29 06:37:11,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 06:37:11,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1196 treesize of output 1270 [2023-11-29 06:37:13,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4