./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0504_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0504_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad4b9fd301578a7ddb25530c70896459a49284f596306d3b6d0c853e43916174 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:10:42,732 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:10:42,796 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:10:42,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:10:42,801 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:10:42,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:10:42,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:10:42,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:10:42,825 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:10:42,826 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:10:42,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:10:42,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:10:42,828 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:10:42,828 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:10:42,829 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:10:42,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:10:42,830 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:10:42,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:10:42,831 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:10:42,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:10:42,832 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:10:42,832 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:10:42,833 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:10:42,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:10:42,834 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:10:42,834 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:10:42,835 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:10:42,835 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:10:42,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:10:42,836 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:10:42,836 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:10:42,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:10:42,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:10:42,838 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:10:42,838 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:10:42,838 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:10:42,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:10:42,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:10:42,838 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:10:42,838 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:10:42,838 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:10:42,839 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_76a0b130-6648-4e0f-af47-3e1da363f93d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad4b9fd301578a7ddb25530c70896459a49284f596306d3b6d0c853e43916174 [2023-11-29 00:10:43,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:10:43,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:10:43,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:10:43,066 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:10:43,066 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:10:43,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/list-ext-properties/test-0504_1.i [2023-11-29 00:10:45,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:10:46,120 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:10:46,121 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/sv-benchmarks/c/list-ext-properties/test-0504_1.i [2023-11-29 00:10:46,136 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/data/dbff8450b/17050224da034f7db90cee979bd29e5f/FLAG6fe6e8119 [2023-11-29 00:10:46,148 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/data/dbff8450b/17050224da034f7db90cee979bd29e5f [2023-11-29 00:10:46,150 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:10:46,152 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:10:46,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:10:46,154 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:10:46,158 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:10:46,158 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,159 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74d5c020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46, skipping insertion in model container [2023-11-29 00:10:46,159 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,200 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:10:46,473 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:10:46,484 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:10:46,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:10:46,556 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:10:46,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46 WrapperNode [2023-11-29 00:10:46,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:10:46,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:10:46,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:10:46,557 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:10:46,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,575 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,595 INFO L138 Inliner]: procedures = 123, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 116 [2023-11-29 00:10:46,596 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:10:46,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:10:46,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:10:46,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:10:46,610 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,615 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,632 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 12 writes are split as follows [0, 12]. [2023-11-29 00:10:46,633 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,633 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,640 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,645 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,647 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:10:46,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:10:46,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:10:46,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:10:46,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (1/1) ... [2023-11-29 00:10:46,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:10:46,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:46,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:10:46,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:10:46,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 00:10:46,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 00:10:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:10:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:10:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:10:46,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:10:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 00:10:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 00:10:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 00:10:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 00:10:46,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:10:46,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:10:46,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:10:46,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:10:46,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:10:46,825 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:10:46,827 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:10:47,128 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:10:47,161 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:10:47,161 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 00:10:47,162 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:10:47 BoogieIcfgContainer [2023-11-29 00:10:47,162 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:10:47,163 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:10:47,164 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:10:47,166 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:10:47,166 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:10:46" (1/3) ... [2023-11-29 00:10:47,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75047a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:10:47, skipping insertion in model container [2023-11-29 00:10:47,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:10:46" (2/3) ... [2023-11-29 00:10:47,167 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75047a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:10:47, skipping insertion in model container [2023-11-29 00:10:47,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:10:47" (3/3) ... [2023-11-29 00:10:47,169 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0504_1.i [2023-11-29 00:10:47,184 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:10:47,184 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-11-29 00:10:47,226 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:10:47,231 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@15f50e75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:10:47,232 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-11-29 00:10:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 42 states have (on average 2.357142857142857) internal successors, (99), 85 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 00:10:47,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 00:10:47,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:47,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 00:10:47,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:47,247 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash 6302076, now seen corresponding path program 1 times [2023-11-29 00:10:47,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:47,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198740502] [2023-11-29 00:10:47,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:47,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:47,389 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 00:10:47,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:47,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198740502] [2023-11-29 00:10:47,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198740502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:47,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:47,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:47,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978155431] [2023-11-29 00:10:47,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:47,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:10:47,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:10:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:10:47,428 INFO L87 Difference]: Start difference. First operand has 86 states, 42 states have (on average 2.357142857142857) internal successors, (99), 85 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:47,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:47,467 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2023-11-29 00:10:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:10:47,470 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 00:10:47,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:47,478 INFO L225 Difference]: With dead ends: 86 [2023-11-29 00:10:47,478 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 00:10:47,480 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 00:10:47,484 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:47,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:10:47,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 00:10:47,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-29 00:10:47,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 84 states have internal predecessors, (92), 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 00:10:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2023-11-29 00:10:47,519 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 4 [2023-11-29 00:10:47,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:47,520 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2023-11-29 00:10:47,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:47,520 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-11-29 00:10:47,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:10:47,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:47,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:10:47,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:10:47,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:47,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1666677727, now seen corresponding path program 1 times [2023-11-29 00:10:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:47,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103780960] [2023-11-29 00:10:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:47,595 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 00:10:47,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:47,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103780960] [2023-11-29 00:10:47,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103780960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:47,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:47,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:47,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606746527] [2023-11-29 00:10:47,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:47,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:47,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:47,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:47,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:47,599 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:47,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:47,643 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2023-11-29 00:10:47,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:47,644 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 00:10:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:47,645 INFO L225 Difference]: With dead ends: 92 [2023-11-29 00:10:47,645 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 00:10:47,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:47,647 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:47,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 158 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:10:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 00:10:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2023-11-29 00:10:47,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 46 states have (on average 2.130434782608696) internal successors, (98), 88 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 00:10:47,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2023-11-29 00:10:47,657 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 6 [2023-11-29 00:10:47,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:47,658 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2023-11-29 00:10:47,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:47,658 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2023-11-29 00:10:47,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:10:47,658 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:47,659 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:10:47,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:10:47,659 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:47,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:47,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1666676706, now seen corresponding path program 1 times [2023-11-29 00:10:47,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:47,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596238100] [2023-11-29 00:10:47,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:47,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:47,739 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 00:10:47,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:47,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596238100] [2023-11-29 00:10:47,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596238100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:47,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:47,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:47,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372114825] [2023-11-29 00:10:47,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:47,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:47,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:47,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:47,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:47,742 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:47,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:47,835 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2023-11-29 00:10:47,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:47,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 00:10:47,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:47,837 INFO L225 Difference]: With dead ends: 81 [2023-11-29 00:10:47,837 INFO L226 Difference]: Without dead ends: 81 [2023-11-29 00:10:47,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:47,839 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 42 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:47,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 73 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:47,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-29 00:10:47,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-29 00:10:47,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 80 states have internal predecessors, (90), 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 00:10:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2023-11-29 00:10:47,848 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 6 [2023-11-29 00:10:47,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:47,848 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2023-11-29 00:10:47,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:47,849 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2023-11-29 00:10:47,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:10:47,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:47,849 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:10:47,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:10:47,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:47,850 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:47,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1666676707, now seen corresponding path program 1 times [2023-11-29 00:10:47,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:47,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399965802] [2023-11-29 00:10:47,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:47,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:47,951 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 00:10:47,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:47,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399965802] [2023-11-29 00:10:47,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399965802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:47,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:47,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:47,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696741055] [2023-11-29 00:10:47,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:47,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:47,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:47,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:47,954 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:48,045 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2023-11-29 00:10:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:48,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 00:10:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:48,047 INFO L225 Difference]: With dead ends: 86 [2023-11-29 00:10:48,047 INFO L226 Difference]: Without dead ends: 86 [2023-11-29 00:10:48,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:48,049 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:48,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 103 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:48,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-29 00:10:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2023-11-29 00:10:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.830188679245283) internal successors, (97), 82 states have internal predecessors, (97), 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 00:10:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2023-11-29 00:10:48,058 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 6 [2023-11-29 00:10:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:48,059 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2023-11-29 00:10:48,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:10:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2023-11-29 00:10:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:10:48,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:48,060 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:48,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:10:48,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:48,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:48,061 INFO L85 PathProgramCache]: Analyzing trace with hash 127401718, now seen corresponding path program 1 times [2023-11-29 00:10:48,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:48,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790365241] [2023-11-29 00:10:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:48,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:48,095 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 00:10:48,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:48,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790365241] [2023-11-29 00:10:48,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790365241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:48,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:48,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:10:48,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917964237] [2023-11-29 00:10:48,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:48,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:48,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:48,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:48,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:48,098 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 3 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 00:10:48,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:48,160 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2023-11-29 00:10:48,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:48,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 00:10:48,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:48,163 INFO L225 Difference]: With dead ends: 85 [2023-11-29 00:10:48,163 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 00:10:48,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:48,165 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 1 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:48,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 112 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:48,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 00:10:48,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-29 00:10:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 81 states have internal predecessors, (95), 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 00:10:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2023-11-29 00:10:48,173 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 7 [2023-11-29 00:10:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:48,174 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2023-11-29 00:10:48,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 00:10:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2023-11-29 00:10:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 00:10:48,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:48,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:48,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:10:48,175 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:48,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:48,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1063044748, now seen corresponding path program 1 times [2023-11-29 00:10:48,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:48,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742738967] [2023-11-29 00:10:48,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:48,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:48,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:48,493 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 00:10:48,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:48,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742738967] [2023-11-29 00:10:48,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742738967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:48,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:48,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:10:48,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207934087] [2023-11-29 00:10:48,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:48,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:10:48,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:48,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:10:48,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:48,496 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 00:10:48,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:48,592 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2023-11-29 00:10:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:10:48,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 00:10:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:48,593 INFO L225 Difference]: With dead ends: 79 [2023-11-29 00:10:48,593 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 00:10:48,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:10:48,595 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 55 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:48,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 106 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:48,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 00:10:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2023-11-29 00:10:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 71 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 00:10:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2023-11-29 00:10:48,600 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 15 [2023-11-29 00:10:48,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:48,601 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2023-11-29 00:10:48,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 00:10:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2023-11-29 00:10:48,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:10:48,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:48,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:48,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:10:48,602 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:48,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:48,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1405381866, now seen corresponding path program 1 times [2023-11-29 00:10:48,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:48,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827611517] [2023-11-29 00:10:48,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:48,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:48,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:48,664 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 00:10:48,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:48,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827611517] [2023-11-29 00:10:48,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827611517] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:48,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:48,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:48,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618109385] [2023-11-29 00:10:48,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:48,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:48,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:48,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:48,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:48,666 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 00:10:48,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:48,699 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2023-11-29 00:10:48,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:48,700 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2023-11-29 00:10:48,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:48,701 INFO L225 Difference]: With dead ends: 101 [2023-11-29 00:10:48,701 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 00:10:48,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:48,702 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:48,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 128 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:10:48,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 00:10:48,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2023-11-29 00:10:48,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 64 states have (on average 1.734375) internal successors, (111), 90 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 00:10:48,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 111 transitions. [2023-11-29 00:10:48,708 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 111 transitions. Word has length 16 [2023-11-29 00:10:48,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:48,709 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 111 transitions. [2023-11-29 00:10:48,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 00:10:48,709 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 111 transitions. [2023-11-29 00:10:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:10:48,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:48,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:48,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:10:48,710 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:48,710 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:48,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1405351175, now seen corresponding path program 1 times [2023-11-29 00:10:48,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:48,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410814341] [2023-11-29 00:10:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:48,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:48,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:48,785 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 00:10:48,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:48,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410814341] [2023-11-29 00:10:48,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410814341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:48,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:48,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:48,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063471382] [2023-11-29 00:10:48,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:48,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:48,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:48,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:48,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:48,787 INFO L87 Difference]: Start difference. First operand 91 states and 111 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 00:10:48,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:48,847 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2023-11-29 00:10:48,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:48,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-11-29 00:10:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:48,849 INFO L225 Difference]: With dead ends: 87 [2023-11-29 00:10:48,849 INFO L226 Difference]: Without dead ends: 87 [2023-11-29 00:10:48,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:48,850 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 11 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:48,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 86 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:48,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-29 00:10:48,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-29 00:10:48,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.609375) internal successors, (103), 86 states have internal predecessors, (103), 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 00:10:48,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2023-11-29 00:10:48,856 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 16 [2023-11-29 00:10:48,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:48,856 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2023-11-29 00:10:48,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 00:10:48,857 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2023-11-29 00:10:48,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:10:48,857 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:48,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:48,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:10:48,858 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:48,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:48,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1405351174, now seen corresponding path program 1 times [2023-11-29 00:10:48,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:48,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142156581] [2023-11-29 00:10:48,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:48,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:48,980 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 00:10:48,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:48,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142156581] [2023-11-29 00:10:48,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142156581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:48,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:48,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:10:48,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986198366] [2023-11-29 00:10:48,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:48,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:10:48,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:48,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:10:48,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:48,983 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 00:10:49,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:49,037 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2023-11-29 00:10:49,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:10:49,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-11-29 00:10:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:49,038 INFO L225 Difference]: With dead ends: 83 [2023-11-29 00:10:49,038 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 00:10:49,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:10:49,040 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 7 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:49,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 91 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:49,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 00:10:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-29 00:10:49,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 64 states have (on average 1.484375) internal successors, (95), 82 states have internal predecessors, (95), 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 00:10:49,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2023-11-29 00:10:49,045 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 16 [2023-11-29 00:10:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:49,046 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2023-11-29 00:10:49,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 00:10:49,046 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2023-11-29 00:10:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 00:10:49,047 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:49,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:49,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:10:49,048 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:49,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:49,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1922638355, now seen corresponding path program 1 times [2023-11-29 00:10:49,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:49,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041387350] [2023-11-29 00:10:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:49,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:49,272 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 00:10:49,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041387350] [2023-11-29 00:10:49,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041387350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:49,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:49,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:10:49,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395188375] [2023-11-29 00:10:49,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:49,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:10:49,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:49,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:10:49,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:10:49,275 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 00:10:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:49,406 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2023-11-29 00:10:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:10:49,406 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2023-11-29 00:10:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:49,407 INFO L225 Difference]: With dead ends: 115 [2023-11-29 00:10:49,407 INFO L226 Difference]: Without dead ends: 115 [2023-11-29 00:10:49,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:10:49,408 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 11 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:49,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 197 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-11-29 00:10:49,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2023-11-29 00:10:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.4625) internal successors, (117), 98 states have internal predecessors, (117), 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 00:10:49,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-11-29 00:10:49,414 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 18 [2023-11-29 00:10:49,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:49,414 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-11-29 00:10:49,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 00:10:49,414 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-11-29 00:10:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 00:10:49,415 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:49,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:49,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 00:10:49,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:49,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:49,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1922638354, now seen corresponding path program 1 times [2023-11-29 00:10:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:49,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249307396] [2023-11-29 00:10:49,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:49,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:49,997 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 00:10:49,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:49,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249307396] [2023-11-29 00:10:49,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249307396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:49,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:49,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:10:49,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007237859] [2023-11-29 00:10:49,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:49,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:10:49,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:49,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:10:49,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:10:49,999 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 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 00:10:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:50,344 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2023-11-29 00:10:50,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:10:50,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 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 18 [2023-11-29 00:10:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:50,346 INFO L225 Difference]: With dead ends: 114 [2023-11-29 00:10:50,346 INFO L226 Difference]: Without dead ends: 114 [2023-11-29 00:10:50,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:10:50,347 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 100 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:50,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 240 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:10:50,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2023-11-29 00:10:50,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 99. [2023-11-29 00:10:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.4375) internal successors, (115), 98 states have internal predecessors, (115), 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 00:10:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2023-11-29 00:10:50,351 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 18 [2023-11-29 00:10:50,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:50,351 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2023-11-29 00:10:50,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 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 00:10:50,352 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2023-11-29 00:10:50,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 00:10:50,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:50,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:50,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 00:10:50,353 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:50,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:50,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1629477680, now seen corresponding path program 1 times [2023-11-29 00:10:50,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:50,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12987342] [2023-11-29 00:10:50,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:50,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:50,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:50,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:50,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12987342] [2023-11-29 00:10:50,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12987342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:50,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:50,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:10:50,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692186308] [2023-11-29 00:10:50,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:50,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:10:50,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:50,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:10:50,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:10:50,414 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:10:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:50,513 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2023-11-29 00:10:50,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:10:50,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:10:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:50,514 INFO L225 Difference]: With dead ends: 107 [2023-11-29 00:10:50,514 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 00:10:50,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:50,515 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 49 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:50,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 104 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 00:10:50,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2023-11-29 00:10:50,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 82 states have (on average 1.451219512195122) internal successors, (119), 100 states have internal predecessors, (119), 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 00:10:50,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2023-11-29 00:10:50,519 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 21 [2023-11-29 00:10:50,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:50,519 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2023-11-29 00:10:50,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:10:50,519 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2023-11-29 00:10:50,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 00:10:50,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:50,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:50,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-29 00:10:50,521 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:50,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:50,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1629477681, now seen corresponding path program 1 times [2023-11-29 00:10:50,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:50,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249436134] [2023-11-29 00:10:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:50,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:50,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:50,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249436134] [2023-11-29 00:10:50,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249436134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:50,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:50,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:10:50,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421521147] [2023-11-29 00:10:50,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:50,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:10:50,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:50,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:10:50,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:10:50,635 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:10:50,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:50,741 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2023-11-29 00:10:50,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:10:50,741 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:10:50,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:50,743 INFO L225 Difference]: With dead ends: 134 [2023-11-29 00:10:50,743 INFO L226 Difference]: Without dead ends: 134 [2023-11-29 00:10:50,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:50,744 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 32 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:50,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 134 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:50,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-29 00:10:50,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 124. [2023-11-29 00:10:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 105 states have (on average 1.438095238095238) internal successors, (151), 123 states have internal predecessors, (151), 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 00:10:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 151 transitions. [2023-11-29 00:10:50,748 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 151 transitions. Word has length 21 [2023-11-29 00:10:50,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:50,748 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 151 transitions. [2023-11-29 00:10:50,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:10:50,749 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 151 transitions. [2023-11-29 00:10:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:10:50,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:50,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:50,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-29 00:10:50,750 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:50,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1025799739, now seen corresponding path program 1 times [2023-11-29 00:10:50,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:50,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237329897] [2023-11-29 00:10:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:50,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:50,807 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 00:10:50,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:50,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237329897] [2023-11-29 00:10:50,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237329897] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:10:50,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685961226] [2023-11-29 00:10:50,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:50,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:50,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:50,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:10:50,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 00:10:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:50,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:10:50,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:50,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:50,983 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:10:50,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685961226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:50,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 00:10:50,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-29 00:10:50,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397892880] [2023-11-29 00:10:50,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:50,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:10:50,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:50,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:10:50,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:50,985 INFO L87 Difference]: Start difference. First operand 124 states and 151 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 00:10:51,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:51,014 INFO L93 Difference]: Finished difference Result 124 states and 149 transitions. [2023-11-29 00:10:51,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:10:51,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2023-11-29 00:10:51,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:51,016 INFO L225 Difference]: With dead ends: 124 [2023-11-29 00:10:51,016 INFO L226 Difference]: Without dead ends: 124 [2023-11-29 00:10:51,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:51,017 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 68 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:51,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 86 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:10:51,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-29 00:10:51,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-11-29 00:10:51,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 105 states have (on average 1.4190476190476191) internal successors, (149), 123 states have internal predecessors, (149), 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 00:10:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2023-11-29 00:10:51,021 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 22 [2023-11-29 00:10:51,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:51,021 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2023-11-29 00:10:51,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 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 00:10:51,021 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2023-11-29 00:10:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:10:51,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:51,022 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:51,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:10:51,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-29 00:10:51,223 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:51,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1025797615, now seen corresponding path program 1 times [2023-11-29 00:10:51,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:51,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142866893] [2023-11-29 00:10:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:51,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:51,299 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:51,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:51,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142866893] [2023-11-29 00:10:51,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142866893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:51,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:51,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:10:51,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851569183] [2023-11-29 00:10:51,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:51,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:10:51,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:51,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:10:51,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:51,301 INFO L87 Difference]: Start difference. First operand 124 states and 149 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 00:10:51,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:51,468 INFO L93 Difference]: Finished difference Result 149 states and 173 transitions. [2023-11-29 00:10:51,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:10:51,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2023-11-29 00:10:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:51,470 INFO L225 Difference]: With dead ends: 149 [2023-11-29 00:10:51,470 INFO L226 Difference]: Without dead ends: 149 [2023-11-29 00:10:51,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:51,471 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 70 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:51,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 123 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-29 00:10:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2023-11-29 00:10:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 114 states have (on average 1.4649122807017543) internal successors, (167), 132 states have internal predecessors, (167), 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 00:10:51,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 167 transitions. [2023-11-29 00:10:51,475 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 167 transitions. Word has length 22 [2023-11-29 00:10:51,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:51,476 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 167 transitions. [2023-11-29 00:10:51,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 00:10:51,476 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 167 transitions. [2023-11-29 00:10:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:10:51,477 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:51,477 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:51,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-29 00:10:51,477 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:51,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:51,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1025797614, now seen corresponding path program 1 times [2023-11-29 00:10:51,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:51,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445357985] [2023-11-29 00:10:51,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:51,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:51,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:51,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:51,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445357985] [2023-11-29 00:10:51,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445357985] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:51,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:51,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:10:51,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385726755] [2023-11-29 00:10:51,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:51,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:10:51,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:51,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:10:51,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:51,599 INFO L87 Difference]: Start difference. First operand 133 states and 167 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 00:10:51,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:51,755 INFO L93 Difference]: Finished difference Result 169 states and 210 transitions. [2023-11-29 00:10:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:10:51,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2023-11-29 00:10:51,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:51,756 INFO L225 Difference]: With dead ends: 169 [2023-11-29 00:10:51,757 INFO L226 Difference]: Without dead ends: 169 [2023-11-29 00:10:51,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:51,757 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 52 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:51,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 146 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-29 00:10:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 149. [2023-11-29 00:10:51,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 130 states have (on average 1.523076923076923) internal successors, (198), 148 states have internal predecessors, (198), 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 00:10:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 198 transitions. [2023-11-29 00:10:51,762 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 198 transitions. Word has length 22 [2023-11-29 00:10:51,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:51,762 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 198 transitions. [2023-11-29 00:10:51,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 00:10:51,762 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 198 transitions. [2023-11-29 00:10:51,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:10:51,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:51,763 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:51,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-29 00:10:51,763 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:51,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:51,764 INFO L85 PathProgramCache]: Analyzing trace with hash 2051026185, now seen corresponding path program 1 times [2023-11-29 00:10:51,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:51,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992151749] [2023-11-29 00:10:51,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:51,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:51,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:51,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992151749] [2023-11-29 00:10:51,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992151749] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:51,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:51,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:10:51,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186897177] [2023-11-29 00:10:51,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:51,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:10:51,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:51,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:10:51,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:51,917 INFO L87 Difference]: Start difference. First operand 149 states and 198 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 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 00:10:52,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:52,115 INFO L93 Difference]: Finished difference Result 189 states and 243 transitions. [2023-11-29 00:10:52,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:10:52,116 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 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 24 [2023-11-29 00:10:52,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:52,117 INFO L225 Difference]: With dead ends: 189 [2023-11-29 00:10:52,117 INFO L226 Difference]: Without dead ends: 189 [2023-11-29 00:10:52,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:10:52,118 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 65 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:52,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 169 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:10:52,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-29 00:10:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 158. [2023-11-29 00:10:52,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 139 states have (on average 1.5179856115107915) internal successors, (211), 157 states have internal predecessors, (211), 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 00:10:52,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 211 transitions. [2023-11-29 00:10:52,135 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 211 transitions. Word has length 24 [2023-11-29 00:10:52,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:52,136 INFO L495 AbstractCegarLoop]: Abstraction has 158 states and 211 transitions. [2023-11-29 00:10:52,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 7 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 00:10:52,136 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 211 transitions. [2023-11-29 00:10:52,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:10:52,137 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:52,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:52,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-29 00:10:52,137 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:52,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:52,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2051026186, now seen corresponding path program 1 times [2023-11-29 00:10:52,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:52,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280125375] [2023-11-29 00:10:52,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:52,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:52,461 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:52,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:52,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280125375] [2023-11-29 00:10:52,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280125375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:52,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:52,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:10:52,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838978365] [2023-11-29 00:10:52,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:52,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:10:52,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:52,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:10:52,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:10:52,463 INFO L87 Difference]: Start difference. First operand 158 states and 211 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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 00:10:52,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:52,613 INFO L93 Difference]: Finished difference Result 168 states and 219 transitions. [2023-11-29 00:10:52,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:10:52,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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 24 [2023-11-29 00:10:52,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:52,615 INFO L225 Difference]: With dead ends: 168 [2023-11-29 00:10:52,615 INFO L226 Difference]: Without dead ends: 168 [2023-11-29 00:10:52,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:10:52,615 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 26 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:52,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 222 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-29 00:10:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 157. [2023-11-29 00:10:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 138 states have (on average 1.5072463768115942) internal successors, (208), 156 states have internal predecessors, (208), 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 00:10:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 208 transitions. [2023-11-29 00:10:52,619 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 208 transitions. Word has length 24 [2023-11-29 00:10:52,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:52,619 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 208 transitions. [2023-11-29 00:10:52,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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 00:10:52,619 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 208 transitions. [2023-11-29 00:10:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 00:10:52,620 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:52,620 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:52,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-29 00:10:52,620 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:52,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:52,621 INFO L85 PathProgramCache]: Analyzing trace with hash -842698756, now seen corresponding path program 1 times [2023-11-29 00:10:52,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:52,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281057563] [2023-11-29 00:10:52,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:52,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:52,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:52,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:52,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:52,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281057563] [2023-11-29 00:10:52,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281057563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:10:52,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:10:52,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:10:52,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075810632] [2023-11-29 00:10:52,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:10:52,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:10:52,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:52,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:10:52,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:52,680 INFO L87 Difference]: Start difference. First operand 157 states and 208 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 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 00:10:52,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:52,775 INFO L93 Difference]: Finished difference Result 184 states and 242 transitions. [2023-11-29 00:10:52,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:10:52,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 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) Word has length 25 [2023-11-29 00:10:52,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:52,776 INFO L225 Difference]: With dead ends: 184 [2023-11-29 00:10:52,776 INFO L226 Difference]: Without dead ends: 184 [2023-11-29 00:10:52,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:52,777 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 70 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:52,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 163 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-29 00:10:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 174. [2023-11-29 00:10:52,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 155 states have (on average 1.5612903225806452) internal successors, (242), 173 states have internal predecessors, (242), 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 00:10:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 242 transitions. [2023-11-29 00:10:52,782 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 242 transitions. Word has length 25 [2023-11-29 00:10:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:52,782 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 242 transitions. [2023-11-29 00:10:52,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 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 00:10:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 242 transitions. [2023-11-29 00:10:52,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-29 00:10:52,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:52,783 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:52,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-29 00:10:52,783 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:52,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:52,783 INFO L85 PathProgramCache]: Analyzing trace with hash -754606682, now seen corresponding path program 1 times [2023-11-29 00:10:52,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:52,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475583679] [2023-11-29 00:10:52,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:52,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:52,834 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:52,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:52,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475583679] [2023-11-29 00:10:52,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475583679] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:10:52,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273576580] [2023-11-29 00:10:52,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:52,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:52,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:52,836 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:10:52,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 00:10:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:52,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:10:52,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:53,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:53,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273576580] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:53,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:10:53,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 4 [2023-11-29 00:10:53,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429802603] [2023-11-29 00:10:53,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:53,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:10:53,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:53,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:10:53,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:53,073 INFO L87 Difference]: Start difference. First operand 174 states and 242 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 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 00:10:53,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:53,119 INFO L93 Difference]: Finished difference Result 226 states and 304 transitions. [2023-11-29 00:10:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:10:53,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 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 28 [2023-11-29 00:10:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:53,121 INFO L225 Difference]: With dead ends: 226 [2023-11-29 00:10:53,121 INFO L226 Difference]: Without dead ends: 226 [2023-11-29 00:10:53,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:10:53,122 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 69 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:53,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 160 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:10:53,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-29 00:10:53,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 210. [2023-11-29 00:10:53,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 191 states have (on average 1.581151832460733) internal successors, (302), 209 states have internal predecessors, (302), 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 00:10:53,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 302 transitions. [2023-11-29 00:10:53,129 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 302 transitions. Word has length 28 [2023-11-29 00:10:53,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:53,129 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 302 transitions. [2023-11-29 00:10:53,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 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 00:10:53,130 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 302 transitions. [2023-11-29 00:10:53,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 00:10:53,130 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:53,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:53,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 00:10:53,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:53,331 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:53,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:53,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1917970929, now seen corresponding path program 1 times [2023-11-29 00:10:53,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:53,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040932694] [2023-11-29 00:10:53,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:53,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:53,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:53,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040932694] [2023-11-29 00:10:53,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040932694] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:10:53,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050463750] [2023-11-29 00:10:53,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:53,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:53,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:53,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:10:53,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 00:10:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:53,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:10:53,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:53,638 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 13 treesize of output 9 [2023-11-29 00:10:53,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:53,677 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:53,730 WARN L854 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_48| Int)) (or (= (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_48| 0) |c_ULTIMATE.start_main_old_#valid#1|) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_48|) 0)))) is different from false [2023-11-29 00:10:53,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-29 00:10:53,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050463750] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:53,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:10:53,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 6 [2023-11-29 00:10:53,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280752718] [2023-11-29 00:10:53,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:53,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:10:53,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:53,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:10:53,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2023-11-29 00:10:53,748 INFO L87 Difference]: Start difference. First operand 210 states and 302 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 00:10:53,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:53,958 INFO L93 Difference]: Finished difference Result 215 states and 306 transitions. [2023-11-29 00:10:53,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:10:53,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 29 [2023-11-29 00:10:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:53,960 INFO L225 Difference]: With dead ends: 215 [2023-11-29 00:10:53,960 INFO L226 Difference]: Without dead ends: 205 [2023-11-29 00:10:53,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=66, Unknown=1, NotChecked=16, Total=110 [2023-11-29 00:10:53,961 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 8 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:53,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 232 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 209 Invalid, 0 Unknown, 61 Unchecked, 0.2s Time] [2023-11-29 00:10:53,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-29 00:10:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2023-11-29 00:10:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 186 states have (on average 1.5913978494623655) internal successors, (296), 204 states have internal predecessors, (296), 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 00:10:53,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 296 transitions. [2023-11-29 00:10:53,967 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 296 transitions. Word has length 29 [2023-11-29 00:10:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:53,967 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 296 transitions. [2023-11-29 00:10:53,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 00:10:53,968 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 296 transitions. [2023-11-29 00:10:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 00:10:53,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:53,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:53,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 00:10:54,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-29 00:10:54,169 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:54,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:54,170 INFO L85 PathProgramCache]: Analyzing trace with hash 196868094, now seen corresponding path program 1 times [2023-11-29 00:10:54,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:54,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911920128] [2023-11-29 00:10:54,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:54,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:54,195 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:10:54,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [690311193] [2023-11-29 00:10:54,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:54,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:54,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:54,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:10:54,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 00:10:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:54,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:10:54,349 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:54,355 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 00:10:54,377 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 00:10:54,412 INFO L349 Elim1Store]: treesize reduction 32, result has 36.0 percent of original size [2023-11-29 00:10:54,412 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 23 treesize of output 24 [2023-11-29 00:10:54,479 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-29 00:10:54,479 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 33 treesize of output 24 [2023-11-29 00:10:54,522 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 00:10:54,522 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 16 [2023-11-29 00:10:54,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:54,534 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:54,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911920128] [2023-11-29 00:10:54,691 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:10:54,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690311193] [2023-11-29 00:10:54,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690311193] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:54,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:10:54,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-11-29 00:10:54,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938627411] [2023-11-29 00:10:54,692 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:54,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:10:54,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:54,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:10:54,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:10:54,693 INFO L87 Difference]: Start difference. First operand 205 states and 296 transitions. Second operand has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 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 00:10:55,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:55,072 INFO L93 Difference]: Finished difference Result 204 states and 294 transitions. [2023-11-29 00:10:55,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:10:55,074 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 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 29 [2023-11-29 00:10:55,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:55,076 INFO L225 Difference]: With dead ends: 204 [2023-11-29 00:10:55,076 INFO L226 Difference]: Without dead ends: 204 [2023-11-29 00:10:55,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:10:55,077 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 17 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:55,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 328 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:10:55,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-11-29 00:10:55,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2023-11-29 00:10:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 186 states have (on average 1.5806451612903225) internal successors, (294), 203 states have internal predecessors, (294), 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 00:10:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 294 transitions. [2023-11-29 00:10:55,081 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 294 transitions. Word has length 29 [2023-11-29 00:10:55,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:55,081 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 294 transitions. [2023-11-29 00:10:55,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.090909090909091) internal successors, (45), 12 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 00:10:55,082 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 294 transitions. [2023-11-29 00:10:55,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 00:10:55,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:55,082 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:55,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 00:10:55,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-29 00:10:55,285 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:55,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:55,285 INFO L85 PathProgramCache]: Analyzing trace with hash 196868095, now seen corresponding path program 1 times [2023-11-29 00:10:55,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:55,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091503013] [2023-11-29 00:10:55,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:55,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:55,309 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:10:55,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1007578730] [2023-11-29 00:10:55,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:55,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:55,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:55,311 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:10:55,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 00:10:55,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:55,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 00:10:55,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:55,498 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 8 treesize of output 1 [2023-11-29 00:10:55,501 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 00:10:55,559 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 00:10:55,568 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 00:10:55,604 INFO L349 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-11-29 00:10:55,604 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 00:10:55,611 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 13 [2023-11-29 00:10:55,691 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-29 00:10:55,691 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 33 treesize of output 24 [2023-11-29 00:10:55,707 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-29 00:10:55,707 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 1 case distinctions, treesize of input 19 treesize of output 18 [2023-11-29 00:10:55,761 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 00:10:55,761 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 16 [2023-11-29 00:10:55,769 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 00:10:55,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 00:10:55,785 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:55,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:56,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:56,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091503013] [2023-11-29 00:10:56,147 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:10:56,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007578730] [2023-11-29 00:10:56,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007578730] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:56,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:10:56,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 00:10:56,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382851511] [2023-11-29 00:10:56,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:56,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:10:56,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:56,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:10:56,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:10:56,149 INFO L87 Difference]: Start difference. First operand 204 states and 294 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) 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 00:10:56,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:56,811 INFO L93 Difference]: Finished difference Result 213 states and 302 transitions. [2023-11-29 00:10:56,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:10:56,811 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) 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 29 [2023-11-29 00:10:56,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:56,812 INFO L225 Difference]: With dead ends: 213 [2023-11-29 00:10:56,812 INFO L226 Difference]: Without dead ends: 213 [2023-11-29 00:10:56,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:10:56,813 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 13 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:56,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 403 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:10:56,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2023-11-29 00:10:56,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 193. [2023-11-29 00:10:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 176 states have (on average 1.6022727272727273) internal successors, (282), 192 states have internal predecessors, (282), 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 00:10:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 282 transitions. [2023-11-29 00:10:56,819 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 282 transitions. Word has length 29 [2023-11-29 00:10:56,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:56,819 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 282 transitions. [2023-11-29 00:10:56,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) 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 00:10:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 282 transitions. [2023-11-29 00:10:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 00:10:56,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:56,820 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:10:56,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 00:10:57,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-29 00:10:57,020 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:57,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 179683623, now seen corresponding path program 1 times [2023-11-29 00:10:57,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:57,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309514847] [2023-11-29 00:10:57,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:57,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:57,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:57,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309514847] [2023-11-29 00:10:57,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309514847] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:10:57,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851423278] [2023-11-29 00:10:57,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:57,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:57,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:57,146 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:10:57,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 00:10:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:57,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 00:10:57,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:57,293 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 00:10:57,333 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-29 00:10:57,333 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 00:10:57,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:57,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:57,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851423278] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:57,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:10:57,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2023-11-29 00:10:57,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357004569] [2023-11-29 00:10:57,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:57,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:10:57,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:10:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:10:57,487 INFO L87 Difference]: Start difference. First operand 193 states and 282 transitions. Second operand has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 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 00:10:57,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:57,614 INFO L93 Difference]: Finished difference Result 212 states and 299 transitions. [2023-11-29 00:10:57,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:10:57,614 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 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 31 [2023-11-29 00:10:57,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:57,616 INFO L225 Difference]: With dead ends: 212 [2023-11-29 00:10:57,616 INFO L226 Difference]: Without dead ends: 212 [2023-11-29 00:10:57,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:10:57,617 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 139 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:57,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 131 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:10:57,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2023-11-29 00:10:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 192. [2023-11-29 00:10:57,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 176 states have (on average 1.5909090909090908) internal successors, (280), 191 states have internal predecessors, (280), 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 00:10:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 280 transitions. [2023-11-29 00:10:57,622 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 280 transitions. Word has length 31 [2023-11-29 00:10:57,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:57,623 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 280 transitions. [2023-11-29 00:10:57,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.833333333333334) internal successors, (53), 7 states have internal predecessors, (53), 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 00:10:57,623 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 280 transitions. [2023-11-29 00:10:57,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 00:10:57,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:57,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:10:57,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 00:10:57,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:57,824 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:57,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:57,825 INFO L85 PathProgramCache]: Analyzing trace with hash 179683624, now seen corresponding path program 1 times [2023-11-29 00:10:57,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:57,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103183373] [2023-11-29 00:10:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:57,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:58,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:58,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103183373] [2023-11-29 00:10:58,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103183373] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:10:58,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659040395] [2023-11-29 00:10:58,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:58,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:58,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:58,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:10:58,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 00:10:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:58,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:10:58,198 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:58,204 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 00:10:58,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:10:58,344 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 16 treesize of output 11 [2023-11-29 00:10:58,354 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:10:58,354 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 00:10:58,412 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:58,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:58,685 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 49 treesize of output 45 [2023-11-29 00:10:58,725 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:58,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659040395] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:58,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:10:58,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2023-11-29 00:10:58,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833853627] [2023-11-29 00:10:58,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:58,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:10:58,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:58,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:10:58,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:10:58,727 INFO L87 Difference]: Start difference. First operand 192 states and 280 transitions. Second operand has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 12 states have internal predecessors, (87), 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 00:10:58,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:10:58,966 INFO L93 Difference]: Finished difference Result 211 states and 297 transitions. [2023-11-29 00:10:58,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:10:58,967 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 12 states have internal predecessors, (87), 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 31 [2023-11-29 00:10:58,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:10:58,968 INFO L225 Difference]: With dead ends: 211 [2023-11-29 00:10:58,968 INFO L226 Difference]: Without dead ends: 211 [2023-11-29 00:10:58,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:10:58,969 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 161 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:10:58,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 192 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:10:58,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-29 00:10:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 191. [2023-11-29 00:10:58,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 176 states have (on average 1.5795454545454546) internal successors, (278), 190 states have internal predecessors, (278), 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 00:10:58,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 278 transitions. [2023-11-29 00:10:58,975 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 278 transitions. Word has length 31 [2023-11-29 00:10:58,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:10:58,975 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 278 transitions. [2023-11-29 00:10:58,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.909090909090909) internal successors, (87), 12 states have internal predecessors, (87), 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 00:10:58,976 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 278 transitions. [2023-11-29 00:10:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 00:10:58,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:10:58,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:10:58,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 00:10:59,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:59,188 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:10:59,188 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:10:59,189 INFO L85 PathProgramCache]: Analyzing trace with hash -763085952, now seen corresponding path program 1 times [2023-11-29 00:10:59,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:10:59,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936187041] [2023-11-29 00:10:59,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:59,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:10:59,205 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:10:59,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119832918] [2023-11-29 00:10:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:10:59,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:10:59,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:10:59,207 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:10:59,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 00:10:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:10:59,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:10:59,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:10:59,387 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 00:10:59,422 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 00:10:59,441 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 21 treesize of output 20 [2023-11-29 00:10:59,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2023-11-29 00:10:59,531 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 00:10:59,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 00:10:59,549 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:10:59,550 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 00:10:59,626 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 32 treesize of output 30 [2023-11-29 00:10:59,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 28 treesize of output 10 [2023-11-29 00:10:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:59,741 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:10:59,945 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 49 treesize of output 45 [2023-11-29 00:10:59,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:10:59,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:10:59,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936187041] [2023-11-29 00:10:59,987 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:10:59,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119832918] [2023-11-29 00:10:59,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119832918] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:10:59,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:10:59,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 14 [2023-11-29 00:10:59,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277292621] [2023-11-29 00:10:59,988 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:10:59,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-29 00:10:59,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:10:59,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-29 00:10:59,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:10:59,990 INFO L87 Difference]: Start difference. First operand 191 states and 278 transitions. Second operand has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 15 states have internal predecessors, (61), 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 00:11:00,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:00,284 INFO L93 Difference]: Finished difference Result 210 states and 298 transitions. [2023-11-29 00:11:00,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:11:00,285 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 15 states have internal predecessors, (61), 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 32 [2023-11-29 00:11:00,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:00,286 INFO L225 Difference]: With dead ends: 210 [2023-11-29 00:11:00,286 INFO L226 Difference]: Without dead ends: 210 [2023-11-29 00:11:00,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:11:00,287 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 68 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:00,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 286 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:11:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-29 00:11:00,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 197. [2023-11-29 00:11:00,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 182 states have (on average 1.565934065934066) internal successors, (285), 196 states have internal predecessors, (285), 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 00:11:00,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 285 transitions. [2023-11-29 00:11:00,293 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 285 transitions. Word has length 32 [2023-11-29 00:11:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:00,293 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 285 transitions. [2023-11-29 00:11:00,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.357142857142857) internal successors, (61), 15 states have internal predecessors, (61), 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 00:11:00,293 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 285 transitions. [2023-11-29 00:11:00,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 00:11:00,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:00,294 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:00,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 00:11:00,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-29 00:11:00,500 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:11:00,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2114141091, now seen corresponding path program 1 times [2023-11-29 00:11:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:00,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257773753] [2023-11-29 00:11:00,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:00,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:00,519 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:11:00,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [531669396] [2023-11-29 00:11:00,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:00,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:00,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:00,521 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:11:00,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 00:11:00,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:00,694 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:11:00,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:11:00,754 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:11:00,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:00,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257773753] [2023-11-29 00:11:00,755 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:11:00,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531669396] [2023-11-29 00:11:00,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531669396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:00,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:00,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:11:00,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045611026] [2023-11-29 00:11:00,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:00,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:11:00,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:00,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:11:00,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:11:00,756 INFO L87 Difference]: Start difference. First operand 197 states and 285 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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 00:11:00,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:00,863 INFO L93 Difference]: Finished difference Result 209 states and 286 transitions. [2023-11-29 00:11:00,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:11:00,864 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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 33 [2023-11-29 00:11:00,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:00,865 INFO L225 Difference]: With dead ends: 209 [2023-11-29 00:11:00,865 INFO L226 Difference]: Without dead ends: 209 [2023-11-29 00:11:00,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:11:00,866 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 54 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:00,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 116 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:11:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2023-11-29 00:11:00,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 197. [2023-11-29 00:11:00,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 182 states have (on average 1.554945054945055) internal successors, (283), 196 states have internal predecessors, (283), 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 00:11:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 283 transitions. [2023-11-29 00:11:00,872 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 283 transitions. Word has length 33 [2023-11-29 00:11:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:00,872 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 283 transitions. [2023-11-29 00:11:00,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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 00:11:00,873 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 283 transitions. [2023-11-29 00:11:00,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 00:11:00,873 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:00,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:00,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 00:11:01,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-29 00:11:01,074 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:11:01,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:01,074 INFO L85 PathProgramCache]: Analyzing trace with hash 170112562, now seen corresponding path program 1 times [2023-11-29 00:11:01,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:01,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6815679] [2023-11-29 00:11:01,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:01,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:01,094 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:11:01,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440460194] [2023-11-29 00:11:01,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:01,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:01,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:01,096 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:11:01,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 00:11:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:01,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:11:01,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:11:01,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:11:01,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6815679] [2023-11-29 00:11:01,318 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:11:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440460194] [2023-11-29 00:11:01,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440460194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:01,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:01,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:11:01,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926986032] [2023-11-29 00:11:01,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:01,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:11:01,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:01,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:11:01,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:11:01,320 INFO L87 Difference]: Start difference. First operand 197 states and 283 transitions. Second operand has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 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 00:11:01,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:01,398 INFO L93 Difference]: Finished difference Result 205 states and 279 transitions. [2023-11-29 00:11:01,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:11:01,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 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 35 [2023-11-29 00:11:01,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:01,400 INFO L225 Difference]: With dead ends: 205 [2023-11-29 00:11:01,400 INFO L226 Difference]: Without dead ends: 205 [2023-11-29 00:11:01,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:11:01,401 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 53 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:01,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 131 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:11:01,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-11-29 00:11:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 179. [2023-11-29 00:11:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 164 states have (on average 1.5) internal successors, (246), 178 states have internal predecessors, (246), 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 00:11:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 246 transitions. [2023-11-29 00:11:01,407 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 246 transitions. Word has length 35 [2023-11-29 00:11:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:01,407 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 246 transitions. [2023-11-29 00:11:01,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.25) internal successors, (33), 5 states have internal predecessors, (33), 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 00:11:01,407 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 246 transitions. [2023-11-29 00:11:01,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 00:11:01,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:01,408 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:01,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-29 00:11:01,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:01,608 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:11:01,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:01,609 INFO L85 PathProgramCache]: Analyzing trace with hash 170112602, now seen corresponding path program 1 times [2023-11-29 00:11:01,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:01,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967441758] [2023-11-29 00:11:01,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:01,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:01,659 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:11:01,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329084334] [2023-11-29 00:11:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:01,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:01,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:01,661 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:11:01,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-29 00:11:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:01,828 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-29 00:11:01,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:01,844 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 00:11:01,874 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 00:11:01,939 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 17 treesize of output 9 [2023-11-29 00:11:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:01,948 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:11:01,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:01,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967441758] [2023-11-29 00:11:01,949 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:11:01,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329084334] [2023-11-29 00:11:01,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329084334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:01,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:01,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:11:01,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105501644] [2023-11-29 00:11:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:01,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:11:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:11:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:11:01,950 INFO L87 Difference]: Start difference. First operand 179 states and 246 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 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 00:11:02,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:02,176 INFO L93 Difference]: Finished difference Result 241 states and 322 transitions. [2023-11-29 00:11:02,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:11:02,177 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 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 35 [2023-11-29 00:11:02,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:02,178 INFO L225 Difference]: With dead ends: 241 [2023-11-29 00:11:02,178 INFO L226 Difference]: Without dead ends: 241 [2023-11-29 00:11:02,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:11:02,179 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 53 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:02,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 157 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:11:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-29 00:11:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 186. [2023-11-29 00:11:02,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 171 states have (on average 1.5029239766081872) internal successors, (257), 185 states have internal predecessors, (257), 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 00:11:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 257 transitions. [2023-11-29 00:11:02,185 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 257 transitions. Word has length 35 [2023-11-29 00:11:02,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:02,185 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 257 transitions. [2023-11-29 00:11:02,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 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 00:11:02,186 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 257 transitions. [2023-11-29 00:11:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 00:11:02,186 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:02,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:02,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-29 00:11:02,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-29 00:11:02,387 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:11:02,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:02,387 INFO L85 PathProgramCache]: Analyzing trace with hash 170112603, now seen corresponding path program 1 times [2023-11-29 00:11:02,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:02,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266061874] [2023-11-29 00:11:02,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:02,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:02,404 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:11:02,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27324115] [2023-11-29 00:11:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:02,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:02,406 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:11:02,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-29 00:11:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:02,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:11:02,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:02,611 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 00:11:02,614 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 00:11:02,706 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 17 treesize of output 9 [2023-11-29 00:11:02,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:02,720 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:11:02,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:02,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266061874] [2023-11-29 00:11:02,720 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:11:02,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27324115] [2023-11-29 00:11:02,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27324115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:02,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:02,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:11:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409584853] [2023-11-29 00:11:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:02,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:11:02,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:02,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:11:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:11:02,722 INFO L87 Difference]: Start difference. First operand 186 states and 257 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 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 00:11:03,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:03,013 INFO L93 Difference]: Finished difference Result 230 states and 307 transitions. [2023-11-29 00:11:03,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:11:03,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 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 35 [2023-11-29 00:11:03,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:03,015 INFO L225 Difference]: With dead ends: 230 [2023-11-29 00:11:03,015 INFO L226 Difference]: Without dead ends: 230 [2023-11-29 00:11:03,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:11:03,016 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 59 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:03,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 246 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:11:03,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-11-29 00:11:03,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 186. [2023-11-29 00:11:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 171 states have (on average 1.4912280701754386) internal successors, (255), 185 states have internal predecessors, (255), 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 00:11:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 255 transitions. [2023-11-29 00:11:03,022 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 255 transitions. Word has length 35 [2023-11-29 00:11:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:03,022 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 255 transitions. [2023-11-29 00:11:03,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 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 00:11:03,023 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 255 transitions. [2023-11-29 00:11:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 00:11:03,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:03,023 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:03,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-29 00:11:03,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:03,230 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:11:03,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:03,230 INFO L85 PathProgramCache]: Analyzing trace with hash 978524868, now seen corresponding path program 1 times [2023-11-29 00:11:03,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:03,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381528368] [2023-11-29 00:11:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:03,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:03,247 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:11:03,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744874503] [2023-11-29 00:11:03,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:03,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:03,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:03,248 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:11:03,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-29 00:11:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:03,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:11:03,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:03,427 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:11:03,427 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:11:03,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:03,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381528368] [2023-11-29 00:11:03,427 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:11:03,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744874503] [2023-11-29 00:11:03,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744874503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:03,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:03,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:11:03,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773243749] [2023-11-29 00:11:03,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:03,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:11:03,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:03,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:11:03,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:11:03,429 INFO L87 Difference]: Start difference. First operand 186 states and 255 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 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 00:11:03,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:03,481 INFO L93 Difference]: Finished difference Result 187 states and 249 transitions. [2023-11-29 00:11:03,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:11:03,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 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 36 [2023-11-29 00:11:03,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:03,483 INFO L225 Difference]: With dead ends: 187 [2023-11-29 00:11:03,483 INFO L226 Difference]: Without dead ends: 187 [2023-11-29 00:11:03,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:11:03,484 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 10 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:03,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 112 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 00:11:03,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-29 00:11:03,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 184. [2023-11-29 00:11:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 171 states have (on average 1.4385964912280702) internal successors, (246), 183 states have internal predecessors, (246), 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 00:11:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 246 transitions. [2023-11-29 00:11:03,488 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 246 transitions. Word has length 36 [2023-11-29 00:11:03,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:03,489 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 246 transitions. [2023-11-29 00:11:03,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 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 00:11:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 246 transitions. [2023-11-29 00:11:03,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 00:11:03,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:03,489 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:03,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-29 00:11:03,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:03,690 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:11:03,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:03,690 INFO L85 PathProgramCache]: Analyzing trace with hash 978524869, now seen corresponding path program 1 times [2023-11-29 00:11:03,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:03,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913370431] [2023-11-29 00:11:03,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:03,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:03,708 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:11:03,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158978267] [2023-11-29 00:11:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:03,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:03,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:03,710 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:11:03,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-29 00:11:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:03,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-29 00:11:03,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:03,913 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 8 treesize of output 1 [2023-11-29 00:11:03,960 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 00:11:03,966 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 00:11:04,050 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 17 treesize of output 9 [2023-11-29 00:11:04,054 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 00:11:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:04,094 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:11:04,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:04,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913370431] [2023-11-29 00:11:04,094 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:11:04,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158978267] [2023-11-29 00:11:04,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158978267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:04,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:04,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-29 00:11:04,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370844428] [2023-11-29 00:11:04,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:04,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:11:04,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:04,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:11:04,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:11:04,095 INFO L87 Difference]: Start difference. First operand 184 states and 246 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 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 00:11:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:04,477 INFO L93 Difference]: Finished difference Result 241 states and 313 transitions. [2023-11-29 00:11:04,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:11:04,477 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 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 36 [2023-11-29 00:11:04,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:04,478 INFO L225 Difference]: With dead ends: 241 [2023-11-29 00:11:04,479 INFO L226 Difference]: Without dead ends: 241 [2023-11-29 00:11:04,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2023-11-29 00:11:04,479 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 58 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:04,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 270 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:11:04,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-11-29 00:11:04,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 190. [2023-11-29 00:11:04,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 177 states have (on average 1.4350282485875707) internal successors, (254), 189 states have internal predecessors, (254), 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 00:11:04,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 254 transitions. [2023-11-29 00:11:04,484 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 254 transitions. Word has length 36 [2023-11-29 00:11:04,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:04,484 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 254 transitions. [2023-11-29 00:11:04,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 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 00:11:04,485 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 254 transitions. [2023-11-29 00:11:04,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 00:11:04,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:04,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:04,491 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-29 00:11:04,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:04,686 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:11:04,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1291415916, now seen corresponding path program 1 times [2023-11-29 00:11:04,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:04,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142686012] [2023-11-29 00:11:04,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:04,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:04,709 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:11:04,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956839627] [2023-11-29 00:11:04,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:04,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:04,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:04,710 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:11:04,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-29 00:11:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:04,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:11:04,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:04,977 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 00:11:05,047 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 17 treesize of output 9 [2023-11-29 00:11:05,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:05,072 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:11:05,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142686012] [2023-11-29 00:11:05,072 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:11:05,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956839627] [2023-11-29 00:11:05,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956839627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:11:05,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:11:05,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:11:05,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054094470] [2023-11-29 00:11:05,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:11:05,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:11:05,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:05,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:11:05,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:11:05,074 INFO L87 Difference]: Start difference. First operand 190 states and 254 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 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 00:11:05,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:05,357 INFO L93 Difference]: Finished difference Result 240 states and 311 transitions. [2023-11-29 00:11:05,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:11:05,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 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 39 [2023-11-29 00:11:05,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:05,359 INFO L225 Difference]: With dead ends: 240 [2023-11-29 00:11:05,359 INFO L226 Difference]: Without dead ends: 240 [2023-11-29 00:11:05,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-29 00:11:05,360 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 55 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:05,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 264 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:11:05,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-11-29 00:11:05,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 192. [2023-11-29 00:11:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 179 states have (on average 1.4301675977653632) internal successors, (256), 191 states have internal predecessors, (256), 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 00:11:05,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 256 transitions. [2023-11-29 00:11:05,365 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 256 transitions. Word has length 39 [2023-11-29 00:11:05,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:05,365 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 256 transitions. [2023-11-29 00:11:05,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 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 00:11:05,366 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 256 transitions. [2023-11-29 00:11:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 00:11:05,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:05,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:05,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-29 00:11:05,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:05,567 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:11:05,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash -976177314, now seen corresponding path program 1 times [2023-11-29 00:11:05,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:05,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595345791] [2023-11-29 00:11:05,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:05,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:05,584 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:11:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1075107671] [2023-11-29 00:11:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:05,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:05,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:05,586 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:11:05,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-29 00:11:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:05,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 00:11:05,794 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:05,797 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 00:11:05,828 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:11:05,828 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 00:11:05,885 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:11:05,917 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:11:05,917 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 16 treesize of output 16 [2023-11-29 00:11:05,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:05,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:11:05,990 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 11 treesize of output 9 [2023-11-29 00:11:05,992 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 20 treesize of output 18 [2023-11-29 00:11:06,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:06,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:06,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595345791] [2023-11-29 00:11:06,080 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:11:06,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1075107671] [2023-11-29 00:11:06,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1075107671] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:11:06,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:11:06,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2023-11-29 00:11:06,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616858399] [2023-11-29 00:11:06,081 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:11:06,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:11:06,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:06,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:11:06,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:11:06,082 INFO L87 Difference]: Start difference. First operand 192 states and 256 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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 00:11:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:06,362 INFO L93 Difference]: Finished difference Result 240 states and 309 transitions. [2023-11-29 00:11:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:11:06,362 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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 40 [2023-11-29 00:11:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:06,363 INFO L225 Difference]: With dead ends: 240 [2023-11-29 00:11:06,364 INFO L226 Difference]: Without dead ends: 238 [2023-11-29 00:11:06,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-11-29 00:11:06,364 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 50 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:06,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 342 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:11:06,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2023-11-29 00:11:06,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 192. [2023-11-29 00:11:06,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 179 states have (on average 1.4189944134078212) internal successors, (254), 191 states have internal predecessors, (254), 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 00:11:06,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 254 transitions. [2023-11-29 00:11:06,368 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 254 transitions. Word has length 40 [2023-11-29 00:11:06,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:06,368 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 254 transitions. [2023-11-29 00:11:06,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 states have internal predecessors, (52), 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 00:11:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 254 transitions. [2023-11-29 00:11:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 00:11:06,369 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:06,369 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:06,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-29 00:11:06,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:06,570 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:11:06,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:06,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1379433479, now seen corresponding path program 1 times [2023-11-29 00:11:06,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:06,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650699036] [2023-11-29 00:11:06,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:06,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:06,586 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:11:06,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532002831] [2023-11-29 00:11:06,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:06,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:06,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:06,587 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:11:06,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-29 00:11:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:06,755 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-29 00:11:06,759 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:06,766 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 00:11:06,776 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 19 treesize of output 18 [2023-11-29 00:11:06,791 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:11:06,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:11:06,880 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:11:06,880 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2023-11-29 00:11:06,972 INFO L349 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2023-11-29 00:11:06,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 38 treesize of output 47 [2023-11-29 00:11:06,982 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 00:11:06,988 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 21 treesize of output 15 [2023-11-29 00:11:07,014 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 22 [2023-11-29 00:11:07,055 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:11:07,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 25 [2023-11-29 00:11:07,086 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2023-11-29 00:11:07,086 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 45 [2023-11-29 00:11:07,100 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 00:11:07,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 00:11:07,357 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 00:11:07,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 17 [2023-11-29 00:11:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:07,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:11:23,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:11:23,998 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 126 treesize of output 244 [2023-11-29 00:11:31,593 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse19 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse2 (select .cse19 |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse5 (store .cse19 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4) |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse6 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8))) (and (or (forall ((v_ArrVal_2517 (Array Int Int)) (v_prenex_4 Int) (|ULTIMATE.start_main_~y~0#1.base| Int) (v_prenex_3 (Array Int Int)) (v_ArrVal_2514 Int)) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 .cse6 v_ArrVal_2514)))) (let ((.cse0 (select (select (let ((.cse4 (store (select .cse3 |ULTIMATE.start_main_~y~0#1.base|) 0 .cse2))) (store (store (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_main_~y~0#1.base| .cse4) .cse2 v_ArrVal_2517) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse3 |ULTIMATE.start_main_~y~0#1.base| .cse4) .cse2 v_ArrVal_2517) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|))) |ULTIMATE.start_main_~y~0#1.base|) 0))) (or (= .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) (= .cse0 (select (select (let ((.cse1 (store (select .cse3 v_prenex_4) 0 .cse2))) (store (store (store |c_#memory_$Pointer$#1.base| v_prenex_4 .cse1) .cse2 v_prenex_3) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse3 v_prenex_4 .cse1) .cse2 v_prenex_3) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_prenex_4))) v_prenex_4) 0)))))) (= |c_ULTIMATE.start_main_~x~0#1.offset| 0)) (forall ((v_prenex_4 Int) (v_prenex_3 (Array Int Int)) (v_ArrVal_2514 Int)) (let ((.cse9 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 .cse6 v_ArrVal_2514)))) (let ((.cse7 (select (select (let ((.cse10 (store (select .cse9 v_prenex_4) 0 .cse2))) (store (store (store |c_#memory_$Pointer$#1.base| v_prenex_4 .cse10) .cse2 v_prenex_3) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse9 v_prenex_4 .cse10) .cse2 v_prenex_3) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_prenex_4))) v_prenex_4) 0))) (or (= .cse7 |c_ULTIMATE.start_main_~x~0#1.base|) (= v_prenex_4 |c_ULTIMATE.start_main_~x~0#1.base|) (forall ((v_ArrVal_2517 (Array Int Int)) (|ULTIMATE.start_main_~y~0#1.base| Int)) (= (select (select (let ((.cse8 (store (select .cse9 |ULTIMATE.start_main_~y~0#1.base|) 0 .cse2))) (store (store (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_main_~y~0#1.base| .cse8) .cse2 v_ArrVal_2517) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse9 |ULTIMATE.start_main_~y~0#1.base| .cse8) .cse2 v_ArrVal_2517) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|))) |ULTIMATE.start_main_~y~0#1.base|) 0) .cse7)))))) (forall ((v_ArrVal_2514 Int)) (let ((.cse12 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 .cse6 v_ArrVal_2514)))) (or (forall ((v_prenex_4 Int) (v_prenex_3 (Array Int Int))) (= (select (select (let ((.cse11 (store (select .cse12 v_prenex_4) 0 .cse2))) (store (store (store |c_#memory_$Pointer$#1.base| v_prenex_4 .cse11) .cse2 v_prenex_3) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse12 v_prenex_4 .cse11) .cse2 v_prenex_3) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_prenex_4))) v_prenex_4) 0) |c_ULTIMATE.start_main_~x~0#1.base|)) (forall ((v_ArrVal_2517 (Array Int Int)) (|ULTIMATE.start_main_~y~0#1.base| Int)) (= (select (select (let ((.cse13 (store (select .cse12 |ULTIMATE.start_main_~y~0#1.base|) 0 .cse2))) (store (store (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_main_~y~0#1.base| .cse13) .cse2 v_ArrVal_2517) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse12 |ULTIMATE.start_main_~y~0#1.base| .cse13) .cse2 v_ArrVal_2517) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|))) |ULTIMATE.start_main_~y~0#1.base|) 0) |c_ULTIMATE.start_main_~x~0#1.base|))))) (forall ((v_prenex_4 Int) (v_prenex_3 (Array Int Int)) (v_ArrVal_2514 Int)) (let ((.cse17 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 .cse6 v_ArrVal_2514)))) (let ((.cse14 (select (select (let ((.cse18 (store (select .cse17 v_prenex_4) 0 .cse2))) (store (store (store |c_#memory_$Pointer$#1.base| v_prenex_4 .cse18) .cse2 v_prenex_3) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse17 v_prenex_4 .cse18) .cse2 v_prenex_3) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_prenex_4))) v_prenex_4) 0))) (or (= .cse14 |c_ULTIMATE.start_main_~x~0#1.base|) (forall ((v_ArrVal_2517 (Array Int Int)) (|ULTIMATE.start_main_~y~0#1.base| Int)) (let ((.cse15 (select (select (let ((.cse16 (store (select .cse17 |ULTIMATE.start_main_~y~0#1.base|) 0 .cse2))) (store (store (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_main_~y~0#1.base| .cse16) .cse2 v_ArrVal_2517) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse17 |ULTIMATE.start_main_~y~0#1.base| .cse16) .cse2 v_ArrVal_2517) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|))) |ULTIMATE.start_main_~y~0#1.base|) 0))) (or (= .cse15 |c_ULTIMATE.start_main_~x~0#1.base|) (= .cse15 .cse14))))))))))) is different from false [2023-11-29 00:11:31,630 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:11:31,632 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 14 treesize of output 12 [2023-11-29 00:11:31,636 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:11:31,638 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 15 treesize of output 11 [2023-11-29 00:11:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:31,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:11:31,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650699036] [2023-11-29 00:11:31,654 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:11:31,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532002831] [2023-11-29 00:11:31,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532002831] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:11:31,654 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:11:31,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2023-11-29 00:11:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169429816] [2023-11-29 00:11:31,654 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:11:31,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 00:11:31,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:11:31,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 00:11:31,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=642, Unknown=58, NotChecked=54, Total=870 [2023-11-29 00:11:31,656 INFO L87 Difference]: Start difference. First operand 192 states and 254 transitions. Second operand has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 30 states have internal predecessors, (68), 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 00:11:37,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:11:37,573 INFO L93 Difference]: Finished difference Result 297 states and 382 transitions. [2023-11-29 00:11:37,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-29 00:11:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 30 states have internal predecessors, (68), 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 40 [2023-11-29 00:11:37,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:11:37,575 INFO L225 Difference]: With dead ends: 297 [2023-11-29 00:11:37,575 INFO L226 Difference]: Without dead ends: 297 [2023-11-29 00:11:37,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=210, Invalid=1368, Unknown=66, NotChecked=78, Total=1722 [2023-11-29 00:11:37,576 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 94 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:11:37,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 663 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1052 Invalid, 0 Unknown, 112 Unchecked, 4.3s Time] [2023-11-29 00:11:37,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-29 00:11:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 246. [2023-11-29 00:11:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 233 states have (on average 1.386266094420601) internal successors, (323), 245 states have internal predecessors, (323), 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 00:11:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 323 transitions. [2023-11-29 00:11:37,582 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 323 transitions. Word has length 40 [2023-11-29 00:11:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:11:37,582 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 323 transitions. [2023-11-29 00:11:37,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.3448275862068964) internal successors, (68), 30 states have internal predecessors, (68), 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 00:11:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 323 transitions. [2023-11-29 00:11:37,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 00:11:37,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:11:37,583 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:11:37,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-29 00:11:37,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:37,783 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:11:37,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:11:37,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1379433480, now seen corresponding path program 1 times [2023-11-29 00:11:37,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:11:37,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001044917] [2023-11-29 00:11:37,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:37,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:11:37,803 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:11:37,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [892857899] [2023-11-29 00:11:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:11:37,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:11:37,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:11:37,804 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:11:37,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-29 00:11:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:11:38,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-29 00:11:38,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:11:38,027 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 00:11:38,032 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 00:11:38,051 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 00:11:38,059 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 19 treesize of output 18 [2023-11-29 00:11:38,087 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 00:11:38,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:11:38,237 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:11:38,238 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 19 treesize of output 18 [2023-11-29 00:11:38,261 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:11:38,262 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2023-11-29 00:11:38,410 INFO L349 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2023-11-29 00:11:38,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 54 treesize of output 59 [2023-11-29 00:11:38,449 INFO L349 Elim1Store]: treesize reduction 14, result has 56.3 percent of original size [2023-11-29 00:11:38,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 37 [2023-11-29 00:11:38,463 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 00:11:38,468 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 30 treesize of output 22 [2023-11-29 00:11:38,527 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 22 [2023-11-29 00:11:38,541 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 27 treesize of output 15 [2023-11-29 00:11:38,588 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 27 treesize of output 15 [2023-11-29 00:11:38,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 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 00:11:38,631 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2023-11-29 00:11:38,631 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 45 [2023-11-29 00:11:38,658 INFO L349 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2023-11-29 00:11:38,658 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 31 treesize of output 38 [2023-11-29 00:11:39,015 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 00:11:39,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 24 [2023-11-29 00:11:39,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 00:11:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:11:39,058 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:33,841 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse2 (select .cse6 |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse0 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8))) (and (forall ((v_ArrVal_2659 (Array Int Int))) (or (not (= v_ArrVal_2659 (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base|) .cse0 (select v_ArrVal_2659 .cse0)))) (forall ((|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_2663 (Array Int Int))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (let ((.cse3 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2659))) (let ((.cse1 (store (select .cse3 |ULTIMATE.start_main_~y~0#1.base|) 0 (select v_ArrVal_2659 |c_ULTIMATE.start_main_~x~0#1.offset|)))) (store (store (store |c_#memory_$Pointer$#1.offset| |ULTIMATE.start_main_~y~0#1.base| .cse1) .cse2 v_ArrVal_2663) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse3 |ULTIMATE.start_main_~y~0#1.base| .cse1) .cse2 v_ArrVal_2663) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| 0)))) |ULTIMATE.start_main_~y~0#1.base|) 0))))) (forall ((|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_2662 (Array Int Int)) (v_ArrVal_2658 Int)) (= (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse6 .cse0 v_ArrVal_2658)))) (let ((.cse4 (store (select .cse5 |ULTIMATE.start_main_~y~0#1.base|) 0 .cse2))) (store (store (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_main_~y~0#1.base| .cse4) .cse2 v_ArrVal_2662) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse5 |ULTIMATE.start_main_~y~0#1.base| .cse4) .cse2 v_ArrVal_2662) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|)))) |ULTIMATE.start_main_~y~0#1.base|) 0) |c_ULTIMATE.start_main_~x~0#1.base|))))) is different from false [2023-11-29 00:12:33,875 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse1 (select .cse7 |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse3 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4)) (.cse4 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8))) (and (forall ((v_ArrVal_2659 (Array Int Int)) (|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_2663 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2659))) (let ((.cse0 (store (select .cse2 |ULTIMATE.start_main_~y~0#1.base|) 0 (select v_ArrVal_2659 |c_ULTIMATE.start_main_~x~0#1.offset|)))) (store (store (store |c_#memory_$Pointer$#1.offset| |ULTIMATE.start_main_~y~0#1.base| .cse0) .cse1 v_ArrVal_2663) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse2 |ULTIMATE.start_main_~y~0#1.base| .cse0) .cse1 v_ArrVal_2663) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| 0)))) |ULTIMATE.start_main_~y~0#1.base|) 0)) (not (= v_ArrVal_2659 (store (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base|) .cse3 (select v_ArrVal_2659 .cse3)) .cse4 (select v_ArrVal_2659 .cse4)))))) (forall ((|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_2662 (Array Int Int)) (v_ArrVal_2658 Int)) (= (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse7 .cse3 |c_ULTIMATE.start_main_~x~0#1.base|) .cse4 v_ArrVal_2658)))) (let ((.cse5 (store (select .cse6 |ULTIMATE.start_main_~y~0#1.base|) 0 .cse1))) (store (store (store |c_#memory_$Pointer$#1.base| |ULTIMATE.start_main_~y~0#1.base| .cse5) .cse1 v_ArrVal_2662) |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store .cse6 |ULTIMATE.start_main_~y~0#1.base| .cse5) .cse1 v_ArrVal_2662) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|)))) |ULTIMATE.start_main_~y~0#1.base|) 0) |c_ULTIMATE.start_main_~x~0#1.base|))))) is different from false [2023-11-29 00:12:33,888 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 14 treesize of output 12 [2023-11-29 00:12:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:12:33,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:33,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001044917] [2023-11-29 00:12:33,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:12:33,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892857899] [2023-11-29 00:12:33,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892857899] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:12:33,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:12:33,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2023-11-29 00:12:33,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185148354] [2023-11-29 00:12:33,902 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:12:33,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 00:12:33,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 00:12:33,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=640, Unknown=49, NotChecked=110, Total=930 [2023-11-29 00:12:33,903 INFO L87 Difference]: Start difference. First operand 246 states and 323 transitions. Second operand has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 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 00:12:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:12:35,363 INFO L93 Difference]: Finished difference Result 289 states and 363 transitions. [2023-11-29 00:12:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-29 00:12:35,364 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 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 40 [2023-11-29 00:12:35,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:12:35,366 INFO L225 Difference]: With dead ends: 289 [2023-11-29 00:12:35,366 INFO L226 Difference]: Without dead ends: 289 [2023-11-29 00:12:35,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 55.5s TimeCoverageRelationStatistics Valid=214, Invalid=1142, Unknown=58, NotChecked=146, Total=1560 [2023-11-29 00:12:35,367 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 113 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:12:35,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 482 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 478 Invalid, 0 Unknown, 197 Unchecked, 0.9s Time] [2023-11-29 00:12:35,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2023-11-29 00:12:35,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 253. [2023-11-29 00:12:35,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 240 states have (on average 1.3583333333333334) internal successors, (326), 252 states have internal predecessors, (326), 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 00:12:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 326 transitions. [2023-11-29 00:12:35,373 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 326 transitions. Word has length 40 [2023-11-29 00:12:35,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:12:35,373 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 326 transitions. [2023-11-29 00:12:35,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.3225806451612905) internal successors, (72), 31 states have internal predecessors, (72), 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 00:12:35,373 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 326 transitions. [2023-11-29 00:12:35,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 00:12:35,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:12:35,374 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:12:35,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-29 00:12:35,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-29 00:12:35,574 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:12:35,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:12:35,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1450192760, now seen corresponding path program 1 times [2023-11-29 00:12:35,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:12:35,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901334083] [2023-11-29 00:12:35,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:35,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:12:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:36,407 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:12:36,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:12:36,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901334083] [2023-11-29 00:12:36,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901334083] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:12:36,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699251737] [2023-11-29 00:12:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:12:36,407 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:12:36,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:12:36,408 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:12:36,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-29 00:12:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:12:36,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 00:12:36,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:12:36,603 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 00:12:36,630 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 00:12:36,640 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 19 treesize of output 18 [2023-11-29 00:12:36,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:12:36,887 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:12:36,887 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 00:12:36,969 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 16 [2023-11-29 00:12:36,985 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 16 [2023-11-29 00:12:37,014 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 16 [2023-11-29 00:12:37,031 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 16 [2023-11-29 00:12:37,055 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 16 [2023-11-29 00:12:37,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:12:37,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:12:37,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-11-29 00:12:37,264 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:12:37,265 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 45 treesize of output 42 [2023-11-29 00:12:37,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:12:37,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:12:37,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 14 [2023-11-29 00:12:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:12:37,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:12:37,571 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-11-29 00:12:37,571 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 16 treesize of output 15 [2023-11-29 00:12:37,672 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2836 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~last~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~last~0#1.base|) (+ |c_ULTIMATE.start_main_~last~0#1.offset| 12) |c_ULTIMATE.start_main_~x~0#1.base|)) |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2836) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|) |c_ULTIMATE.start_main_~first~0#1.base|)) is different from false [2023-11-29 00:12:38,254 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:12:38,254 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 43 treesize of output 48 [2023-11-29 00:12:38,261 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 56 treesize of output 50 [2023-11-29 00:12:38,264 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:12:38,267 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 25 treesize of output 17 [2023-11-29 00:12:38,270 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 00:12:38,319 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2023-11-29 00:12:38,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699251737] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:12:38,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:12:38,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 25 [2023-11-29 00:12:38,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489899497] [2023-11-29 00:12:38,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:12:38,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:12:38,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:12:38,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:12:38,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=501, Unknown=18, NotChecked=46, Total=650 [2023-11-29 00:12:38,321 INFO L87 Difference]: Start difference. First operand 253 states and 326 transitions. Second operand has 26 states, 25 states have (on average 4.16) internal successors, (104), 26 states have internal predecessors, (104), 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 00:12:40,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:12:44,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:12:48,748 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:12:52,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:12:56,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:13:00,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:13:04,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:13:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:13:07,574 INFO L93 Difference]: Finished difference Result 350 states and 441 transitions. [2023-11-29 00:13:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-29 00:13:07,574 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.16) internal successors, (104), 26 states have internal predecessors, (104), 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 41 [2023-11-29 00:13:07,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:13:07,576 INFO L225 Difference]: With dead ends: 350 [2023-11-29 00:13:07,576 INFO L226 Difference]: Without dead ends: 350 [2023-11-29 00:13:07,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=392, Invalid=1736, Unknown=38, NotChecked=90, Total=2256 [2023-11-29 00:13:07,578 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 196 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 52 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 154 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:13:07,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 545 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 673 Invalid, 30 Unknown, 154 Unchecked, 27.9s Time] [2023-11-29 00:13:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2023-11-29 00:13:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 292. [2023-11-29 00:13:07,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 279 states have (on average 1.3512544802867383) internal successors, (377), 291 states have internal predecessors, (377), 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 00:13:07,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 377 transitions. [2023-11-29 00:13:07,583 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 377 transitions. Word has length 41 [2023-11-29 00:13:07,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:13:07,583 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 377 transitions. [2023-11-29 00:13:07,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.16) internal successors, (104), 26 states have internal predecessors, (104), 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 00:13:07,583 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 377 transitions. [2023-11-29 00:13:07,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 00:13:07,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:13:07,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:07,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-11-29 00:13:07,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-11-29 00:13:07,785 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:13:07,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:07,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1450192759, now seen corresponding path program 1 times [2023-11-29 00:13:07,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:07,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429299747] [2023-11-29 00:13:07,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:07,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:08,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:08,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429299747] [2023-11-29 00:13:08,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429299747] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:08,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925427925] [2023-11-29 00:13:08,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:08,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:08,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:08,883 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:08,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-29 00:13:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:09,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 53 conjunts are in the unsatisfiable core [2023-11-29 00:13:09,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:09,088 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 00:13:09,110 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 00:13:09,118 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 00:13:09,127 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 19 treesize of output 18 [2023-11-29 00:13:09,140 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 00:13:09,196 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 00:13:09,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:13:09,433 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:13:09,433 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 00:13:09,526 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 16 [2023-11-29 00:13:09,541 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 00:13:09,567 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 16 [2023-11-29 00:13:09,584 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 00:13:09,603 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 16 [2023-11-29 00:13:09,621 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 00:13:09,638 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 16 [2023-11-29 00:13:09,653 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 00:13:09,688 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 00:13:09,696 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 16 [2023-11-29 00:13:09,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:09,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:09,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2023-11-29 00:13:09,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:09,876 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 27 treesize of output 11 [2023-11-29 00:13:09,987 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 00:13:09,987 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 65 treesize of output 58 [2023-11-29 00:13:09,997 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 28 treesize of output 11 [2023-11-29 00:13:10,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:10,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:13:10,267 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:13:10,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 14 [2023-11-29 00:13:10,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 00:13:10,305 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:10,305 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:10,358 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_3012 (Array Int Int))) (= |c_ULTIMATE.start_main_~first~0#1.offset| (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3012) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|))) (forall ((v_ArrVal_3013 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3013) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|) |c_ULTIMATE.start_main_~first~0#1.base|))) is different from false [2023-11-29 00:13:10,525 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~last~0#1.offset| 12))) (and (forall ((v_ArrVal_3013 (Array Int Int)) (v_ArrVal_3008 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~last~0#1.base| (store (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3008) |c_ULTIMATE.start_main_~last~0#1.base|) .cse0 |c_ULTIMATE.start_main_~x~0#1.base|)) |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3013) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|) |c_ULTIMATE.start_main_~first~0#1.base|)) (forall ((v_ArrVal_3012 (Array Int Int)) (v_ArrVal_3007 (Array Int Int)) (v_ArrVal_3011 Int)) (= |c_ULTIMATE.start_main_~first~0#1.offset| (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~last~0#1.base| (store (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3007) |c_ULTIMATE.start_main_~last~0#1.base|) .cse0 v_ArrVal_3011)) |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3012) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|))))) is different from false [2023-11-29 00:13:23,282 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 72 treesize of output 70 [2023-11-29 00:13:23,290 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:13:23,293 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 00:13:23,299 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:13:23,304 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-29 00:13:23,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 1 [2023-11-29 00:13:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2023-11-29 00:13:23,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925427925] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:13:23,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:13:23,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 13] total 26 [2023-11-29 00:13:23,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836608621] [2023-11-29 00:13:23,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:13:23,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-29 00:13:23,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:23,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-29 00:13:23,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=460, Unknown=16, NotChecked=90, Total=650 [2023-11-29 00:13:23,368 INFO L87 Difference]: Start difference. First operand 292 states and 377 transitions. Second operand has 26 states, 26 states have (on average 4.038461538461538) internal successors, (105), 26 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 00:13:26,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:13:30,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:13:34,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:13:38,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:13:42,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:13:46,420 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:13:50,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:13:57,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-29 00:13:57,564 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse0 (+ |c_ULTIMATE.start_main_~last~0#1.offset| 12))) (and (= (select |c_#valid| |c_ULTIMATE.start_main_~x~0#1.base|) 1) (forall ((|v_ULTIMATE.start_main_~x~0#1.base_68| Int)) (or (forall ((v_ArrVal_3012 (Array Int Int)) (v_ArrVal_3007 (Array Int Int)) (v_ArrVal_3011 Int)) (= |c_ULTIMATE.start_main_~first~0#1.offset| (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~last~0#1.base| (store (select (store |c_#memory_$Pointer$#1.offset| |v_ULTIMATE.start_main_~x~0#1.base_68| v_ArrVal_3007) |c_ULTIMATE.start_main_~last~0#1.base|) .cse0 v_ArrVal_3011)) |v_ULTIMATE.start_main_~x~0#1.base_68| v_ArrVal_3012) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_68|) 0)))) (= (select .cse1 4) |c_ULTIMATE.start_main_~x~0#1.base|) (= (select .cse1 0) |c_ULTIMATE.start_main_~x~0#1.base|) (forall ((v_ArrVal_3012 (Array Int Int))) (= |c_ULTIMATE.start_main_~first~0#1.offset| (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3012) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|))) (= (select (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base|) 0) 0) (forall ((v_ArrVal_3013 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3013) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|) |c_ULTIMATE.start_main_~first~0#1.base|)) (= |c_ULTIMATE.start_main_~x~0#1.offset| 0) (forall ((v_ArrVal_3012 (Array Int Int)) (v_ArrVal_3011 Int)) (= |c_ULTIMATE.start_main_~first~0#1.offset| (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~last~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~last~0#1.base|) .cse0 v_ArrVal_3011)) |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3012) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|))) (forall ((v_ArrVal_3013 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~last~0#1.base| (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~last~0#1.base|) .cse0 |c_ULTIMATE.start_main_~x~0#1.base|)) |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3013) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|) |c_ULTIMATE.start_main_~first~0#1.base|)) (forall ((|v_ULTIMATE.start_main_~x~0#1.base_68| Int)) (or (forall ((v_ArrVal_3013 (Array Int Int)) (v_ArrVal_3008 (Array Int Int))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~last~0#1.base| (store (select (store |c_#memory_$Pointer$#1.base| |v_ULTIMATE.start_main_~x~0#1.base_68| v_ArrVal_3008) |c_ULTIMATE.start_main_~last~0#1.base|) .cse0 |v_ULTIMATE.start_main_~x~0#1.base_68|)) |v_ULTIMATE.start_main_~x~0#1.base_68| v_ArrVal_3013) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|) |c_ULTIMATE.start_main_~first~0#1.base|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_68|) 0)))))) is different from false [2023-11-29 00:13:57,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:13:57,839 INFO L93 Difference]: Finished difference Result 326 states and 413 transitions. [2023-11-29 00:13:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-11-29 00:13:57,840 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.038461538461538) internal successors, (105), 26 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) Word has length 41 [2023-11-29 00:13:57,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:13:57,842 INFO L225 Difference]: With dead ends: 326 [2023-11-29 00:13:57,842 INFO L226 Difference]: Without dead ends: 326 [2023-11-29 00:13:57,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 76 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=322, Invalid=1394, Unknown=18, NotChecked=246, Total=1980 [2023-11-29 00:13:57,843 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 120 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 54 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 32.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:13:57,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 654 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 844 Invalid, 10 Unknown, 262 Unchecked, 32.8s Time] [2023-11-29 00:13:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-29 00:13:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2023-11-29 00:13:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 274 states have (on average 1.3503649635036497) internal successors, (370), 286 states have internal predecessors, (370), 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 00:13:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 370 transitions. [2023-11-29 00:13:57,848 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 370 transitions. Word has length 41 [2023-11-29 00:13:57,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:13:57,848 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 370 transitions. [2023-11-29 00:13:57,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.038461538461538) internal successors, (105), 26 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 00:13:57,848 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 370 transitions. [2023-11-29 00:13:57,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 00:13:57,849 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:13:57,849 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:57,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-29 00:13:58,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-29 00:13:58,050 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:13:58,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:58,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1403110857, now seen corresponding path program 2 times [2023-11-29 00:13:58,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:58,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385768582] [2023-11-29 00:13:58,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:58,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:58,125 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:13:58,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:58,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385768582] [2023-11-29 00:13:58,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385768582] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:58,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479945997] [2023-11-29 00:13:58,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:13:58,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:58,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:58,127 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:58,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-29 00:13:58,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:13:58,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:13:58,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:13:58,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:58,460 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:13:58,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:13:58,531 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:13:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479945997] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:13:58,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:13:58,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-11-29 00:13:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59736548] [2023-11-29 00:13:58,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:13:58,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:13:58,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:13:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:13:58,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:13:58,533 INFO L87 Difference]: Start difference. First operand 287 states and 370 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 00:13:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:13:58,656 INFO L93 Difference]: Finished difference Result 254 states and 322 transitions. [2023-11-29 00:13:58,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:13:58,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 43 [2023-11-29 00:13:58,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:13:58,658 INFO L225 Difference]: With dead ends: 254 [2023-11-29 00:13:58,658 INFO L226 Difference]: Without dead ends: 254 [2023-11-29 00:13:58,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:13:58,658 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 31 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:13:58,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 127 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:13:58,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-11-29 00:13:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 235. [2023-11-29 00:13:58,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 222 states have (on average 1.3513513513513513) internal successors, (300), 234 states have internal predecessors, (300), 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 00:13:58,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 300 transitions. [2023-11-29 00:13:58,664 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 300 transitions. Word has length 43 [2023-11-29 00:13:58,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:13:58,664 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 300 transitions. [2023-11-29 00:13:58,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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 00:13:58,664 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 300 transitions. [2023-11-29 00:13:58,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 00:13:58,665 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:13:58,665 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:13:58,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-29 00:13:58,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-29 00:13:58,865 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:13:58,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:13:58,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1026987611, now seen corresponding path program 1 times [2023-11-29 00:13:58,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:13:58,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583672684] [2023-11-29 00:13:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:58,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:13:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:13:59,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:13:59,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583672684] [2023-11-29 00:13:59,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583672684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:13:59,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117917941] [2023-11-29 00:13:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:13:59,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:13:59,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:13:59,294 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:13:59,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-29 00:13:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:13:59,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:13:59,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:13:59,527 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 00:13:59,711 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-29 00:13:59,711 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 00:14:00,014 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 11 treesize of output 7 [2023-11-29 00:14:00,082 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 00:14:00,083 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 34 treesize of output 33 [2023-11-29 00:14:00,247 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 25 treesize of output 13 [2023-11-29 00:14:00,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 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 19 treesize of output 12 [2023-11-29 00:14:00,332 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:00,332 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:00,432 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~first~0#1.offset| 12))) (and (forall ((v_ArrVal_3301 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3301) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0) |c_ULTIMATE.start_main_~first~0#1.base|))) (forall ((v_ArrVal_3301 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3301) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0)) 1)))) is different from false [2023-11-29 00:14:00,441 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:00,441 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 24 treesize of output 25 [2023-11-29 00:14:00,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:00,453 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 40 treesize of output 39 [2023-11-29 00:14:00,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-11-29 00:14:00,490 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:00,491 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 23 treesize of output 24 [2023-11-29 00:14:00,506 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:00,506 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 38 [2023-11-29 00:14:00,511 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 22 treesize of output 18 [2023-11-29 00:14:00,809 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:00,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117917941] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:00,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:14:00,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-11-29 00:14:00,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875366231] [2023-11-29 00:14:00,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:00,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-29 00:14:00,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:00,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-29 00:14:00,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=273, Unknown=1, NotChecked=34, Total=380 [2023-11-29 00:14:00,811 INFO L87 Difference]: Start difference. First operand 235 states and 300 transitions. Second operand has 20 states, 19 states have (on average 5.421052631578948) internal successors, (103), 20 states have internal predecessors, (103), 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 00:14:01,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:01,699 INFO L93 Difference]: Finished difference Result 292 states and 363 transitions. [2023-11-29 00:14:01,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:14:01,699 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.421052631578948) internal successors, (103), 20 states have internal predecessors, (103), 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 45 [2023-11-29 00:14:01,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:01,700 INFO L225 Difference]: With dead ends: 292 [2023-11-29 00:14:01,700 INFO L226 Difference]: Without dead ends: 292 [2023-11-29 00:14:01,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=462, Unknown=1, NotChecked=46, Total=650 [2023-11-29 00:14:01,701 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 127 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:01,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 540 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 578 Invalid, 0 Unknown, 131 Unchecked, 0.7s Time] [2023-11-29 00:14:01,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-11-29 00:14:01,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 277. [2023-11-29 00:14:01,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 264 states have (on average 1.3409090909090908) internal successors, (354), 276 states have internal predecessors, (354), 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 00:14:01,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 354 transitions. [2023-11-29 00:14:01,705 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 354 transitions. Word has length 45 [2023-11-29 00:14:01,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:01,705 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 354 transitions. [2023-11-29 00:14:01,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.421052631578948) internal successors, (103), 20 states have internal predecessors, (103), 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 00:14:01,705 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 354 transitions. [2023-11-29 00:14:01,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 00:14:01,706 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:01,706 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:01,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-29 00:14:01,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-29 00:14:01,906 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:14:01,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1026987610, now seen corresponding path program 1 times [2023-11-29 00:14:01,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:01,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243733811] [2023-11-29 00:14:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:01,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:02,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:02,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243733811] [2023-11-29 00:14:02,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243733811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:14:02,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769420028] [2023-11-29 00:14:02,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:02,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:02,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:02,732 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:02,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-29 00:14:02,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:02,950 INFO L262 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-29 00:14:02,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:02,959 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 00:14:03,089 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:14:03,090 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 00:14:03,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:14:03,410 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 11 treesize of output 7 [2023-11-29 00:14:03,480 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 00:14:03,480 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 56 treesize of output 51 [2023-11-29 00:14:03,486 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 24 [2023-11-29 00:14:03,609 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 00:14:03,613 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 26 treesize of output 14 [2023-11-29 00:14:03,682 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:03,683 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:03,834 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~first~0#1.offset| 12))) (and (forall ((v_ArrVal_3462 (Array Int Int)) (v_ArrVal_3463 (Array Int Int))) (<= (+ 16 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3463) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3462) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0)))) (forall ((v_ArrVal_3463 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3463) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0) 12))))) is different from false [2023-11-29 00:14:03,845 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:03,845 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 45 treesize of output 46 [2023-11-29 00:14:03,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:03,853 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 35 treesize of output 36 [2023-11-29 00:14:03,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:03,868 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 62 treesize of output 61 [2023-11-29 00:14:03,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:03,891 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 96 treesize of output 89 [2023-11-29 00:14:03,933 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 15 treesize of output 11 [2023-11-29 00:14:03,938 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 11 treesize of output 7 [2023-11-29 00:14:03,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:03,948 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 24 treesize of output 25 [2023-11-29 00:14:03,951 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:14:03,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:14:03,956 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 00:14:04,143 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 7 treesize of output 5 [2023-11-29 00:14:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:04,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769420028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:04,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:14:04,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-11-29 00:14:04,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992089906] [2023-11-29 00:14:04,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:04,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 00:14:04,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:04,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 00:14:04,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=357, Unknown=1, NotChecked=38, Total=462 [2023-11-29 00:14:04,399 INFO L87 Difference]: Start difference. First operand 277 states and 354 transitions. Second operand has 22 states, 21 states have (on average 5.571428571428571) internal successors, (117), 22 states have internal predecessors, (117), 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 00:14:05,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:05,459 INFO L93 Difference]: Finished difference Result 329 states and 412 transitions. [2023-11-29 00:14:05,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:14:05,459 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.571428571428571) internal successors, (117), 22 states have internal predecessors, (117), 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 45 [2023-11-29 00:14:05,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:05,461 INFO L225 Difference]: With dead ends: 329 [2023-11-29 00:14:05,461 INFO L226 Difference]: Without dead ends: 329 [2023-11-29 00:14:05,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=187, Invalid=686, Unknown=1, NotChecked=56, Total=930 [2023-11-29 00:14:05,462 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 207 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:05,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 655 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 525 Invalid, 0 Unknown, 135 Unchecked, 0.7s Time] [2023-11-29 00:14:05,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-11-29 00:14:05,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 307. [2023-11-29 00:14:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 294 states have (on average 1.346938775510204) internal successors, (396), 306 states have internal predecessors, (396), 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 00:14:05,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 396 transitions. [2023-11-29 00:14:05,466 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 396 transitions. Word has length 45 [2023-11-29 00:14:05,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:05,467 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 396 transitions. [2023-11-29 00:14:05,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.571428571428571) internal successors, (117), 22 states have internal predecessors, (117), 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 00:14:05,467 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 396 transitions. [2023-11-29 00:14:05,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 00:14:05,467 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:05,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:05,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-29 00:14:05,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:05,668 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:14:05,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:05,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1138395695, now seen corresponding path program 1 times [2023-11-29 00:14:05,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:05,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369366686] [2023-11-29 00:14:05,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:05,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:05,683 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:05,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234242398] [2023-11-29 00:14:05,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:05,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:05,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:05,684 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:05,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-29 00:14:05,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:05,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 36 conjunts are in the unsatisfiable core [2023-11-29 00:14:05,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:05,977 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 13 treesize of output 9 [2023-11-29 00:14:06,007 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 00:14:06,010 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 00:14:06,040 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-29 00:14:06,040 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 22 treesize of output 25 [2023-11-29 00:14:06,054 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 7 treesize of output 5 [2023-11-29 00:14:06,724 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:06,724 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 35 [2023-11-29 00:14:06,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:06,787 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 15 treesize of output 15 [2023-11-29 00:14:07,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:07,167 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 34 treesize of output 32 [2023-11-29 00:14:07,356 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:07,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:08,406 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 48 treesize of output 44 [2023-11-29 00:14:08,412 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 79 treesize of output 75 [2023-11-29 00:14:08,417 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 62 treesize of output 56 [2023-11-29 00:14:08,425 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 94 treesize of output 88 [2023-11-29 00:14:09,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:09,562 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 652 treesize of output 401 [2023-11-29 00:14:10,761 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:10,762 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 689 treesize of output 1156 [2023-11-29 00:14:10,992 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:10,992 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 408 treesize of output 409 [2023-11-29 00:14:11,088 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 400 treesize of output 396 [2023-11-29 00:14:11,196 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 396 treesize of output 392 [2023-11-29 00:14:11,290 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 392 treesize of output 388 [2023-11-29 00:14:11,417 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:11,418 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 388 treesize of output 389 [2023-11-29 00:14:11,562 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:11,562 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 380 treesize of output 381 [2023-11-29 00:14:11,654 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 372 treesize of output 368 [2023-11-29 00:14:11,745 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 368 treesize of output 364 [2023-11-29 00:14:11,861 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 364 treesize of output 360 [2023-11-29 00:14:25,885 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:25,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:25,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369366686] [2023-11-29 00:14:25,886 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:25,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234242398] [2023-11-29 00:14:25,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234242398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:25,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:25,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2023-11-29 00:14:25,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062887734] [2023-11-29 00:14:25,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:25,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-29 00:14:25,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:25,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-29 00:14:25,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=774, Unknown=1, NotChecked=0, Total=870 [2023-11-29 00:14:25,888 INFO L87 Difference]: Start difference. First operand 307 states and 396 transitions. Second operand has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 30 states have internal predecessors, (70), 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 00:14:30,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:30,710 INFO L93 Difference]: Finished difference Result 440 states and 565 transitions. [2023-11-29 00:14:30,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-29 00:14:30,711 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 30 states have internal predecessors, (70), 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 45 [2023-11-29 00:14:30,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:30,712 INFO L225 Difference]: With dead ends: 440 [2023-11-29 00:14:30,712 INFO L226 Difference]: Without dead ends: 436 [2023-11-29 00:14:30,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=324, Invalid=2327, Unknown=1, NotChecked=0, Total=2652 [2023-11-29 00:14:30,713 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 221 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:30,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 408 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1083 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 00:14:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-29 00:14:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 343. [2023-11-29 00:14:30,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 330 states have (on average 1.3484848484848484) internal successors, (445), 342 states have internal predecessors, (445), 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 00:14:30,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 445 transitions. [2023-11-29 00:14:30,719 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 445 transitions. Word has length 45 [2023-11-29 00:14:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:30,719 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 445 transitions. [2023-11-29 00:14:30,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.3333333333333335) internal successors, (70), 30 states have internal predecessors, (70), 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 00:14:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 445 transitions. [2023-11-29 00:14:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 00:14:30,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:30,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:30,725 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-11-29 00:14:30,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2023-11-29 00:14:30,921 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:14:30,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:30,921 INFO L85 PathProgramCache]: Analyzing trace with hash 428905901, now seen corresponding path program 1 times [2023-11-29 00:14:30,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:30,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205777276] [2023-11-29 00:14:30,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:30,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:30,941 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:30,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1794111762] [2023-11-29 00:14:30,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:30,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:30,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:30,942 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:30,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-29 00:14:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:31,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-29 00:14:31,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:31,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 00:14:31,314 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 00:14:31,314 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 13 [2023-11-29 00:14:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:14:31,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:31,543 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:14:31,545 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-29 00:14:31,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205777276] [2023-11-29 00:14:31,545 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:31,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794111762] [2023-11-29 00:14:31,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794111762] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:31,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:31,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 00:14:31,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508809532] [2023-11-29 00:14:31,546 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:31,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:14:31,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:31,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:14:31,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:14:31,555 INFO L87 Difference]: Start difference. First operand 343 states and 445 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 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 00:14:31,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:31,921 INFO L93 Difference]: Finished difference Result 373 states and 481 transitions. [2023-11-29 00:14:31,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:14:31,922 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 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 45 [2023-11-29 00:14:31,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:31,923 INFO L225 Difference]: With dead ends: 373 [2023-11-29 00:14:31,923 INFO L226 Difference]: Without dead ends: 373 [2023-11-29 00:14:31,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:14:31,924 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 50 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:31,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 137 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:14:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-29 00:14:31,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 317. [2023-11-29 00:14:31,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 305 states have (on average 1.3114754098360655) internal successors, (400), 316 states have internal predecessors, (400), 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 00:14:31,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 400 transitions. [2023-11-29 00:14:31,930 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 400 transitions. Word has length 45 [2023-11-29 00:14:31,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:31,930 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 400 transitions. [2023-11-29 00:14:31,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 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 00:14:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 400 transitions. [2023-11-29 00:14:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 00:14:31,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:31,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:31,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:32,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-11-29 00:14:32,132 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:14:32,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:32,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1568223699, now seen corresponding path program 1 times [2023-11-29 00:14:32,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:32,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141655481] [2023-11-29 00:14:32,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:32,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:32,147 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:32,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [204057857] [2023-11-29 00:14:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:32,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:32,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:32,149 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:32,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-29 00:14:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:32,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:14:32,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:14:32,439 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-29 00:14:32,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:32,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141655481] [2023-11-29 00:14:32,522 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:32,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204057857] [2023-11-29 00:14:32,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204057857] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:32,522 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:32,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-11-29 00:14:32,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647235260] [2023-11-29 00:14:32,522 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:32,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:14:32,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:32,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:14:32,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:14:32,523 INFO L87 Difference]: Start difference. First operand 317 states and 400 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 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 00:14:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:32,685 INFO L93 Difference]: Finished difference Result 381 states and 463 transitions. [2023-11-29 00:14:32,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:14:32,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 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 45 [2023-11-29 00:14:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:32,687 INFO L225 Difference]: With dead ends: 381 [2023-11-29 00:14:32,688 INFO L226 Difference]: Without dead ends: 381 [2023-11-29 00:14:32,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:14:32,688 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 181 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:32,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 223 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:14:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-29 00:14:32,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 335. [2023-11-29 00:14:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 323 states have (on average 1.2693498452012384) internal successors, (410), 334 states have internal predecessors, (410), 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 00:14:32,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 410 transitions. [2023-11-29 00:14:32,694 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 410 transitions. Word has length 45 [2023-11-29 00:14:32,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:32,694 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 410 transitions. [2023-11-29 00:14:32,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 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 00:14:32,694 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 410 transitions. [2023-11-29 00:14:32,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-29 00:14:32,694 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:32,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:32,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-29 00:14:32,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-29 00:14:32,895 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:14:32,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1351133267, now seen corresponding path program 1 times [2023-11-29 00:14:32,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:32,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869817840] [2023-11-29 00:14:32,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:32,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:32,911 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 00:14:32,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [610502989] [2023-11-29 00:14:32,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:32,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:32,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:32,912 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:32,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-29 00:14:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:33,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:14:33,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:33,209 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:14:33,209 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 00:14:33,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869817840] [2023-11-29 00:14:33,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 00:14:33,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610502989] [2023-11-29 00:14:33,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610502989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:33,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:14:33,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2023-11-29 00:14:33,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465736967] [2023-11-29 00:14:33,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:33,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:14:33,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:33,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:14:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:14:33,268 INFO L87 Difference]: Start difference. First operand 335 states and 410 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 00:14:33,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:33,369 INFO L93 Difference]: Finished difference Result 413 states and 488 transitions. [2023-11-29 00:14:33,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:14:33,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 45 [2023-11-29 00:14:33,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:33,372 INFO L225 Difference]: With dead ends: 413 [2023-11-29 00:14:33,372 INFO L226 Difference]: Without dead ends: 413 [2023-11-29 00:14:33,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:14:33,372 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 80 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:33,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 112 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:14:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2023-11-29 00:14:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 400. [2023-11-29 00:14:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 388 states have (on average 1.2139175257731958) internal successors, (471), 399 states have internal predecessors, (471), 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 00:14:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 471 transitions. [2023-11-29 00:14:33,378 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 471 transitions. Word has length 45 [2023-11-29 00:14:33,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:33,378 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 471 transitions. [2023-11-29 00:14:33,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 00:14:33,378 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 471 transitions. [2023-11-29 00:14:33,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 00:14:33,378 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:33,378 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:33,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-11-29 00:14:33,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-29 00:14:33,579 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:14:33,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:33,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1771845136, now seen corresponding path program 1 times [2023-11-29 00:14:33,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:33,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037962746] [2023-11-29 00:14:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:33,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:33,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:33,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037962746] [2023-11-29 00:14:33,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037962746] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:14:33,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427531062] [2023-11-29 00:14:33,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:33,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:33,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:33,693 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:33,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-29 00:14:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:33,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:14:33,987 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:34,106 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:34,106 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:34,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427531062] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:34,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:14:34,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-11-29 00:14:34,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965913520] [2023-11-29 00:14:34,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:34,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:14:34,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:34,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:14:34,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:14:34,222 INFO L87 Difference]: Start difference. First operand 400 states and 471 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 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 00:14:34,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:34,332 INFO L93 Difference]: Finished difference Result 408 states and 471 transitions. [2023-11-29 00:14:34,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:14:34,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 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 46 [2023-11-29 00:14:34,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:34,334 INFO L225 Difference]: With dead ends: 408 [2023-11-29 00:14:34,334 INFO L226 Difference]: Without dead ends: 408 [2023-11-29 00:14:34,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:14:34,334 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 80 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:34,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 242 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:14:34,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-11-29 00:14:34,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 402. [2023-11-29 00:14:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 390 states have (on average 1.2076923076923076) internal successors, (471), 401 states have internal predecessors, (471), 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 00:14:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 471 transitions. [2023-11-29 00:14:34,339 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 471 transitions. Word has length 46 [2023-11-29 00:14:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:34,339 INFO L495 AbstractCegarLoop]: Abstraction has 402 states and 471 transitions. [2023-11-29 00:14:34,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 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 00:14:34,339 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 471 transitions. [2023-11-29 00:14:34,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 00:14:34,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:34,340 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:34,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-29 00:14:34,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-29 00:14:34,540 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:14:34,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1771843012, now seen corresponding path program 1 times [2023-11-29 00:14:34,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:34,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407977804] [2023-11-29 00:14:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:34,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-29 00:14:34,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:34,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407977804] [2023-11-29 00:14:34,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407977804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:14:34,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:14:34,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:14:34,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141536285] [2023-11-29 00:14:34,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:14:34,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:14:34,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:34,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:14:34,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:14:34,623 INFO L87 Difference]: Start difference. First operand 402 states and 471 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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 00:14:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:34,758 INFO L93 Difference]: Finished difference Result 452 states and 545 transitions. [2023-11-29 00:14:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:14:34,759 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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) Word has length 46 [2023-11-29 00:14:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:34,761 INFO L225 Difference]: With dead ends: 452 [2023-11-29 00:14:34,761 INFO L226 Difference]: Without dead ends: 452 [2023-11-29 00:14:34,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:14:34,761 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 22 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:34,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 94 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:14:34,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2023-11-29 00:14:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 401. [2023-11-29 00:14:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 390 states have (on average 1.205128205128205) internal successors, (470), 400 states have internal predecessors, (470), 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 00:14:34,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 470 transitions. [2023-11-29 00:14:34,767 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 470 transitions. Word has length 46 [2023-11-29 00:14:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:34,767 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 470 transitions. [2023-11-29 00:14:34,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 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 00:14:34,767 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 470 transitions. [2023-11-29 00:14:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-29 00:14:34,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:34,768 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:34,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-11-29 00:14:34,768 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:14:34,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:34,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1771843011, now seen corresponding path program 1 times [2023-11-29 00:14:34,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:34,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689048431] [2023-11-29 00:14:34,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:34,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:35,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:35,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689048431] [2023-11-29 00:14:35,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689048431] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:14:35,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1875501400] [2023-11-29 00:14:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:35,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:35,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:35,493 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:35,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-29 00:14:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:35,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 00:14:35,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:35,796 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 00:14:35,929 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:14:35,929 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 00:14:36,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:14:36,184 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 00:14:36,237 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 00:14:36,303 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:36,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:36,342 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:36,342 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 19 treesize of output 23 [2023-11-29 00:14:36,509 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:36,509 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 24 treesize of output 25 [2023-11-29 00:14:36,523 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:36,523 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 38 [2023-11-29 00:14:36,527 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 7 treesize of output 3 [2023-11-29 00:14:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:36,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1875501400] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:36,849 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:14:36,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 23 [2023-11-29 00:14:36,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447798635] [2023-11-29 00:14:36,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:36,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-29 00:14:36,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:36,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-29 00:14:36,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=472, Unknown=3, NotChecked=0, Total=552 [2023-11-29 00:14:36,850 INFO L87 Difference]: Start difference. First operand 401 states and 470 transitions. Second operand has 24 states, 23 states have (on average 4.956521739130435) internal successors, (114), 24 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 00:14:38,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:38,393 INFO L93 Difference]: Finished difference Result 468 states and 544 transitions. [2023-11-29 00:14:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:14:38,393 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.956521739130435) internal successors, (114), 24 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) Word has length 46 [2023-11-29 00:14:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:38,395 INFO L225 Difference]: With dead ends: 468 [2023-11-29 00:14:38,395 INFO L226 Difference]: Without dead ends: 468 [2023-11-29 00:14:38,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=243, Invalid=1086, Unknown=3, NotChecked=0, Total=1332 [2023-11-29 00:14:38,396 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 251 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:38,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 664 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-29 00:14:38,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-11-29 00:14:38,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 435. [2023-11-29 00:14:38,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 424 states have (on average 1.2193396226415094) internal successors, (517), 434 states have internal predecessors, (517), 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 00:14:38,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 517 transitions. [2023-11-29 00:14:38,402 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 517 transitions. Word has length 46 [2023-11-29 00:14:38,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:38,403 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 517 transitions. [2023-11-29 00:14:38,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.956521739130435) internal successors, (114), 24 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 00:14:38,403 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 517 transitions. [2023-11-29 00:14:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 00:14:38,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:38,403 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:38,410 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-29 00:14:38,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:38,604 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:14:38,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:38,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1934029236, now seen corresponding path program 1 times [2023-11-29 00:14:38,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:38,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206961130] [2023-11-29 00:14:38,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:38,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:39,270 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:39,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206961130] [2023-11-29 00:14:39,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206961130] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:14:39,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912194725] [2023-11-29 00:14:39,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:39,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:39,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:39,272 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:39,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-29 00:14:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:39,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 00:14:39,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:39,543 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 00:14:39,679 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:14:39,679 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 00:14:39,859 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 11 treesize of output 7 [2023-11-29 00:14:39,900 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 00:14:39,975 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:39,975 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:40,019 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4536 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4536) |c_ULTIMATE.start_main_~first~0#1.base|) (+ |c_ULTIMATE.start_main_~first~0#1.offset| 12)) 0)) is different from false [2023-11-29 00:14:40,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:40,029 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 22 treesize of output 23 [2023-11-29 00:14:40,041 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:40,041 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 35 [2023-11-29 00:14:40,044 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 7 treesize of output 3 [2023-11-29 00:14:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:40,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912194725] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:14:40,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 00:14:40,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 18 [2023-11-29 00:14:40,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677022339] [2023-11-29 00:14:40,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 00:14:40,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:14:40,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:14:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:14:40,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=254, Unknown=1, NotChecked=32, Total=342 [2023-11-29 00:14:40,345 INFO L87 Difference]: Start difference. First operand 435 states and 517 transitions. Second operand has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 19 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 00:14:41,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:14:41,175 INFO L93 Difference]: Finished difference Result 464 states and 540 transitions. [2023-11-29 00:14:41,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:14:41,175 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 19 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) Word has length 48 [2023-11-29 00:14:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:14:41,177 INFO L225 Difference]: With dead ends: 464 [2023-11-29 00:14:41,177 INFO L226 Difference]: Without dead ends: 464 [2023-11-29 00:14:41,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=587, Unknown=1, NotChecked=52, Total=812 [2023-11-29 00:14:41,178 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 256 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:14:41,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 430 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 455 Invalid, 0 Unknown, 146 Unchecked, 0.6s Time] [2023-11-29 00:14:41,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-11-29 00:14:41,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 444. [2023-11-29 00:14:41,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 433 states have (on average 1.2309468822170901) internal successors, (533), 443 states have internal predecessors, (533), 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 00:14:41,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 533 transitions. [2023-11-29 00:14:41,183 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 533 transitions. Word has length 48 [2023-11-29 00:14:41,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:14:41,184 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 533 transitions. [2023-11-29 00:14:41,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.555555555555555) internal successors, (100), 19 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 00:14:41,184 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 533 transitions. [2023-11-29 00:14:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-29 00:14:41,184 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:14:41,184 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:14:41,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-11-29 00:14:41,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2023-11-29 00:14:41,385 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:14:41,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:14:41,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1934029196, now seen corresponding path program 1 times [2023-11-29 00:14:41,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:14:41,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815247781] [2023-11-29 00:14:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:41,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:14:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:42,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:14:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815247781] [2023-11-29 00:14:42,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815247781] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 00:14:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174935428] [2023-11-29 00:14:42,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:14:42,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:14:42,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:14:42,356 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 00:14:42,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-29 00:14:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:14:42,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 54 conjunts are in the unsatisfiable core [2023-11-29 00:14:42,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:14:42,722 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 00:14:42,835 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-29 00:14:42,835 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 00:14:42,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2023-11-29 00:14:42,952 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 11 treesize of output 7 [2023-11-29 00:14:43,025 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 19 treesize of output 18 [2023-11-29 00:14:43,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:14:43,261 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 26 treesize of output 28 [2023-11-29 00:14:43,274 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 11 treesize of output 7 [2023-11-29 00:14:43,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:43,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 59 [2023-11-29 00:14:43,367 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 00:14:43,599 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 00:14:44,007 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 00:14:44,094 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 00:14:44,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 28 [2023-11-29 00:14:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:14:44,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:14:44,148 INFO L349 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2023-11-29 00:14:44,149 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 16 treesize of output 15 [2023-11-29 00:14:44,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:44,553 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 191 treesize of output 181 [2023-11-29 00:14:44,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:14:44,569 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 353 treesize of output 346 [2023-11-29 00:14:44,578 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 169 treesize of output 161 [2023-11-29 00:15:32,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:15:32,857 INFO L349 Elim1Store]: treesize reduction 333, result has 28.1 percent of original size [2023-11-29 00:15:32,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 874 treesize of output 355 [2023-11-29 00:15:32,964 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:32,964 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 988 treesize of output 1034 [2023-11-29 00:15:33,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2023-11-29 00:15:33,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2023-11-29 00:15:34,089 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:34,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 110 treesize of output 124 [2023-11-29 00:15:34,259 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:34,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 227 treesize of output 237 [2023-11-29 00:15:34,911 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:34,911 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 480 treesize of output 480 [2023-11-29 00:15:36,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:36,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 294 treesize of output 292 [2023-11-29 00:15:37,661 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:37,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 228 treesize of output 314 [2023-11-29 00:15:38,426 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:15:39,345 INFO L349 Elim1Store]: treesize reduction 823, result has 25.1 percent of original size [2023-11-29 00:15:39,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 1783 treesize of output 965 [2023-11-29 00:15:39,427 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:15:39,615 INFO L349 Elim1Store]: treesize reduction 8, result has 89.0 percent of original size [2023-11-29 00:15:39,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 2171 treesize of output 1840 [2023-11-29 00:15:40,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2023-11-29 00:15:41,060 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:41,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 158 treesize of output 170 [2023-11-29 00:15:42,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:42,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 714 treesize of output 716 [2023-11-29 00:15:43,852 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:43,852 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 275 treesize of output 277 [2023-11-29 00:15:44,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:44,098 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 32 treesize of output 36 [2023-11-29 00:15:44,167 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:44,167 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 48 [2023-11-29 00:15:44,287 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:44,287 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 32 treesize of output 36 [2023-11-29 00:15:44,755 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:15:44,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 1019 treesize of output 1073 [2023-11-29 00:16:02,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:16:02,596 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-11-29 00:16:02,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 49 [2023-11-29 00:16:02,705 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:16:02,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 55 [2023-11-29 00:16:02,735 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:16:02,737 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:16:02,759 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 20 treesize of output 16 [2023-11-29 00:16:02,801 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-11-29 00:16:02,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 49 [2023-11-29 00:16:02,853 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-29 00:16:02,854 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 100 treesize of output 1 [2023-11-29 00:16:02,863 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:16:02,881 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2023-11-29 00:16:02,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 161 treesize of output 1 [2023-11-29 00:16:04,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:16:04,981 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 13 select indices, 13 select index equivalence classes, 0 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 78 case distinctions, treesize of input 717 treesize of output 1095 [2023-11-29 00:17:12,776 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:17:12,785 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:17:13,995 INFO L349 Elim1Store]: treesize reduction 1089, result has 27.6 percent of original size [2023-11-29 00:17:13,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 1793 treesize of output 1186 [2023-11-29 00:17:14,206 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:17:14,414 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:14,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 14 case distinctions, treesize of input 3472 treesize of output 3233 [2023-11-29 00:17:24,041 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 17 [2023-11-29 00:17:30,898 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:17:30,982 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:17:32,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:32,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 400 treesize of output 442 [2023-11-29 00:17:36,511 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:17:36,560 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:17:37,296 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:17:37,335 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:17:40,856 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:17:42,365 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:42,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 318 treesize of output 356 [2023-11-29 00:17:50,194 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-11-29 00:17:50,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 219 treesize of output 201 [2023-11-29 00:17:50,972 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:17:51,080 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:17:51,274 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-11-29 00:17:51,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 310 treesize of output 1 [2023-11-29 00:17:56,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:56,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 153 [2023-11-29 00:17:57,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:57,094 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 19 treesize of output 23 [2023-11-29 00:17:57,302 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:57,303 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 75 treesize of output 77 [2023-11-29 00:17:57,515 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:17:57,515 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:17:57,516 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:17:57,517 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:17:57,537 INFO L349 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2023-11-29 00:17:57,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 29 [2023-11-29 00:17:57,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:57,654 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 139 treesize of output 139 [2023-11-29 00:17:57,957 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-11-29 00:17:57,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 1 [2023-11-29 00:17:58,177 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:58,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 345 treesize of output 387 [2023-11-29 00:17:59,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:17:59,827 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 176 treesize of output 174 [2023-11-29 00:18:00,297 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-11-29 00:18:00,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 107 treesize of output 1 [2023-11-29 00:18:00,491 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-11-29 00:18:00,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 246 treesize of output 1 [2023-11-29 00:18:00,640 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 00:18:00,640 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 97 treesize of output 1 [2023-11-29 00:18:00,697 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:18:00,716 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:18:00,888 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 00:18:00,899 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 176 treesize of output 1 [2023-11-29 00:18:01,053 INFO L349 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2023-11-29 00:18:01,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 163 treesize of output 1 [2023-11-29 00:18:12,346 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:18:12,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 10631 treesize of output 10179 [2023-11-29 00:18:25,888 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:18:26,184 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:18:26,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 4 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 17 case distinctions, treesize of input 3000 treesize of output 2966 [2023-11-29 00:20:22,312 INFO L349 Elim1Store]: treesize reduction 43, result has 21.8 percent of original size [2023-11-29 00:20:22,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 100 treesize of output 83 [2023-11-29 00:20:22,491 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:22,532 INFO L349 Elim1Store]: treesize reduction 10, result has 52.4 percent of original size [2023-11-29 00:20:22,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 22 [2023-11-29 00:20:22,603 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:22,610 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 9 treesize of output 7 [2023-11-29 00:20:22,652 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:20:22,652 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 1 case distinctions, treesize of input 36 treesize of output 40 [2023-11-29 00:20:22,744 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:22,744 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:22,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-11-29 00:20:22,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:20:22,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 38 [2023-11-29 00:20:22,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:20:22,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 48 treesize of output 58 [2023-11-29 00:20:23,047 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 00:20:23,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 12 [2023-11-29 00:20:23,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:20:23,181 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 31 [2023-11-29 00:20:23,285 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:23,430 INFO L349 Elim1Store]: treesize reduction 5, result has 70.6 percent of original size [2023-11-29 00:20:23,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 33 treesize of output 34 [2023-11-29 00:20:23,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:23,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 17 treesize of output 15 [2023-11-29 00:20:23,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 7 [2023-11-29 00:20:23,681 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:23,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2023-11-29 00:20:23,709 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:23,746 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:23,763 INFO L349 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2023-11-29 00:20:23,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2023-11-29 00:20:23,866 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 00:20:23,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 20 [2023-11-29 00:20:24,042 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:20:24,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 20 [2023-11-29 00:20:24,165 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:24,269 INFO L349 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2023-11-29 00:20:24,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 48 treesize of output 1 [2023-11-29 00:20:24,440 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:24,469 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 00:20:24,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2023-11-29 00:20:24,531 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:24,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:24,533 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:24,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 9 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2023-11-29 00:20:24,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:24,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 17 treesize of output 15 [2023-11-29 00:20:24,611 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:24,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:24,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 23 [2023-11-29 00:20:24,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:24,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 23 [2023-11-29 00:20:24,781 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:24,786 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:24,787 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:24,792 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-11-29 00:20:24,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 1 [2023-11-29 00:20:24,811 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:24,894 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:24,899 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:24,912 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:24,983 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:25,056 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:25,063 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:25,119 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:25,131 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:25,178 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:25,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:25,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2023-11-29 00:20:25,346 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:25,394 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:25,406 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-11-29 00:20:25,406 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 2 case distinctions, treesize of input 24 treesize of output 1 [2023-11-29 00:20:25,466 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:25,467 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:25,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:20:25,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2023-11-29 00:20:25,535 INFO L349 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2023-11-29 00:20:25,535 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 2 case distinctions, treesize of input 48 treesize of output 1 [2023-11-29 00:20:25,550 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:25,570 WARN L214 Elim1Store]: Array PQE input equivalent to true [2023-11-29 00:20:26,574 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:20:28,435 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:20:28,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 14 select indices, 14 select index equivalence classes, 1 disjoint index pairs (out of 91 index pairs), introduced 14 new quantified variables, introduced 90 case distinctions, treesize of input 858 treesize of output 1278 [2023-11-29 00:21:43,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2023-11-29 00:21:43,273 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:43,274 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-29 00:21:43,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-11-29 00:21:43,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 00:21:43,475 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_76a0b130-6648-4e0f-af47-3e1da363f93d/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$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$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) ... 69 more [2023-11-29 00:21:43,477 INFO L158 Benchmark]: Toolchain (without parser) took 657326.03ms. Allocated memory was 165.7MB in the beginning and 377.5MB in the end (delta: 211.8MB). Free memory was 122.7MB in the beginning and 222.3MB in the end (delta: -99.6MB). Peak memory consumption was 239.0MB. Max. memory is 16.1GB. [2023-11-29 00:21:43,477 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:21:43,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 403.15ms. Allocated memory is still 165.7MB. Free memory was 122.7MB in the beginning and 105.1MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-29 00:21:43,478 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.99ms. Allocated memory is still 165.7MB. Free memory was 105.1MB in the beginning and 103.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:21:43,478 INFO L158 Benchmark]: Boogie Preprocessor took 54.21ms. Allocated memory is still 165.7MB. Free memory was 103.0MB in the beginning and 100.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:21:43,478 INFO L158 Benchmark]: RCFGBuilder took 510.16ms. Allocated memory is still 165.7MB. Free memory was 100.1MB in the beginning and 121.8MB in the end (delta: -21.7MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. [2023-11-29 00:21:43,478 INFO L158 Benchmark]: TraceAbstraction took 656313.75ms. Allocated memory was 165.7MB in the beginning and 377.5MB in the end (delta: 211.8MB). Free memory was 120.7MB in the beginning and 222.3MB in the end (delta: -101.6MB). Peak memory consumption was 235.0MB. Max. memory is 16.1GB. [2023-11-29 00:21:43,479 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 104.9MB. Free memory is still 52.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 403.15ms. Allocated memory is still 165.7MB. Free memory was 122.7MB in the beginning and 105.1MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.99ms. Allocated memory is still 165.7MB. Free memory was 105.1MB in the beginning and 103.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.21ms. Allocated memory is still 165.7MB. Free memory was 103.0MB in the beginning and 100.1MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 510.16ms. Allocated memory is still 165.7MB. Free memory was 100.1MB in the beginning and 121.8MB in the end (delta: -21.7MB). Peak memory consumption was 14.5MB. Max. memory is 16.1GB. * TraceAbstraction took 656313.75ms. Allocated memory was 165.7MB in the beginning and 377.5MB in the end (delta: 211.8MB). Free memory was 120.7MB in the beginning and 222.3MB in the end (delta: -101.6MB). Peak memory consumption was 235.0MB. 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_76a0b130-6648-4e0f-af47-3e1da363f93d/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_76a0b130-6648-4e0f-af47-3e1da363f93d/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_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0504_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ad4b9fd301578a7ddb25530c70896459a49284f596306d3b6d0c853e43916174 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:21:45,151 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:21:45,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 00:21:45,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:21:45,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:21:45,260 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:21:45,261 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:21:45,262 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:21:45,262 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:21:45,263 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:21:45,264 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:21:45,264 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:21:45,265 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:21:45,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:21:45,266 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:21:45,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:21:45,268 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:21:45,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:21:45,269 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:21:45,269 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:21:45,270 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:21:45,270 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:21:45,271 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:21:45,271 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:21:45,272 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:21:45,272 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:21:45,273 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:21:45,273 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:21:45,274 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:21:45,274 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:21:45,275 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:21:45,275 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:21:45,275 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:21:45,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:21:45,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:21:45,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:21:45,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:21:45,277 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:21:45,277 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:21:45,277 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:21:45,277 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:21:45,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:21:45,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:21:45,278 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:21:45,278 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_76a0b130-6648-4e0f-af47-3e1da363f93d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad4b9fd301578a7ddb25530c70896459a49284f596306d3b6d0c853e43916174 [2023-11-29 00:21:45,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:21:45,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:21:45,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:21:45,591 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:21:45,592 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:21:45,593 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/list-ext-properties/test-0504_1.i [2023-11-29 00:21:48,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:21:48,590 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:21:48,591 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/sv-benchmarks/c/list-ext-properties/test-0504_1.i [2023-11-29 00:21:48,605 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/data/338c23de1/57ef8d4853b44bd78ef4a494bf9e30e6/FLAG51218ea1c [2023-11-29 00:21:48,620 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/data/338c23de1/57ef8d4853b44bd78ef4a494bf9e30e6 [2023-11-29 00:21:48,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:21:48,624 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:21:48,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:21:48,626 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:21:48,631 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:21:48,631 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:21:48" (1/1) ... [2023-11-29 00:21:48,632 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f29691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:48, skipping insertion in model container [2023-11-29 00:21:48,633 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:21:48" (1/1) ... [2023-11-29 00:21:48,674 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:21:48,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:21:48,975 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:21:49,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:21:49,046 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:21:49,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49 WrapperNode [2023-11-29 00:21:49,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:21:49,047 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:21:49,047 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:21:49,048 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:21:49,053 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,072 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,095 INFO L138 Inliner]: procedures = 126, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 115 [2023-11-29 00:21:49,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:21:49,096 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:21:49,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:21:49,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:21:49,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,110 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,127 INFO L175 MemorySlicer]: Split 20 memory accesses to 2 slices as follows [2, 18]. 90 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 12 writes are split as follows [0, 12]. [2023-11-29 00:21:49,127 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,128 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,143 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,146 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,148 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,152 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:21:49,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:21:49,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:21:49,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:21:49,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (1/1) ... [2023-11-29 00:21:49,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:21:49,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:21:49,190 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:21:49,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:21:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 00:21:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 00:21:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:21:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:21:49,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 00:21:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 00:21:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 00:21:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 00:21:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:21:49,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 00:21:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 00:21:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:21:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:21:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:21:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:21:49,374 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:21:49,376 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:21:49,858 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:21:49,914 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:21:49,914 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 00:21:49,914 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:21:49 BoogieIcfgContainer [2023-11-29 00:21:49,915 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:21:49,918 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:21:49,918 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:21:49,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:21:49,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:21:48" (1/3) ... [2023-11-29 00:21:49,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9344187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:21:49, skipping insertion in model container [2023-11-29 00:21:49,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:21:49" (2/3) ... [2023-11-29 00:21:49,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9344187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:21:49, skipping insertion in model container [2023-11-29 00:21:49,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:21:49" (3/3) ... [2023-11-29 00:21:49,924 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0504_1.i [2023-11-29 00:21:49,945 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:21:49,945 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-11-29 00:21:50,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:21:50,033 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@25d835d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:21:50,034 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-11-29 00:21:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 42 states have (on average 2.357142857142857) internal successors, (99), 85 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 00:21:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-29 00:21:50,044 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:50,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-29 00:21:50,046 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:50,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:50,054 INFO L85 PathProgramCache]: Analyzing trace with hash 6302076, now seen corresponding path program 1 times [2023-11-29 00:21:50,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:50,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146622146] [2023-11-29 00:21:50,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:50,067 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 00:21:50,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:50,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:50,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:50,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-29 00:21:50,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:50,175 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 00:21:50,175 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:50,176 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:50,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146622146] [2023-11-29 00:21:50,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146622146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:50,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:50,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:21:50,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682324793] [2023-11-29 00:21:50,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:50,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 00:21:50,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:50,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 00:21:50,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 00:21:50,217 INFO L87 Difference]: Start difference. First operand has 86 states, 42 states have (on average 2.357142857142857) internal successors, (99), 85 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:50,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:50,298 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2023-11-29 00:21:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 00:21:50,301 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-29 00:21:50,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:50,310 INFO L225 Difference]: With dead ends: 86 [2023-11-29 00:21:50,310 INFO L226 Difference]: Without dead ends: 85 [2023-11-29 00:21:50,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 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 00:21:50,316 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:50,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:21:50,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-11-29 00:21:50,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2023-11-29 00:21:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 42 states have (on average 2.1904761904761907) internal successors, (92), 84 states have internal predecessors, (92), 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 00:21:50,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2023-11-29 00:21:50,353 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 4 [2023-11-29 00:21:50,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:50,353 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2023-11-29 00:21:50,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:50,354 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2023-11-29 00:21:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:21:50,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:50,354 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:21:50,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:50,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:50,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:50,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:50,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1666677727, now seen corresponding path program 1 times [2023-11-29 00:21:50,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:50,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407718629] [2023-11-29 00:21:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:50,558 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 00:21:50,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:50,559 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:50,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:50,607 INFO L262 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:21:50,608 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:50,635 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 00:21:50,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:50,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:50,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407718629] [2023-11-29 00:21:50,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407718629] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:50,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:50,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:21:50,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533692831] [2023-11-29 00:21:50,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:50,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:21:50,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:50,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:21:50,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:50,639 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:50,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:50,780 INFO L93 Difference]: Finished difference Result 92 states and 100 transitions. [2023-11-29 00:21:50,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:21:50,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 00:21:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:50,783 INFO L225 Difference]: With dead ends: 92 [2023-11-29 00:21:50,783 INFO L226 Difference]: Without dead ends: 92 [2023-11-29 00:21:50,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:50,795 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:50,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 158 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:21:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-29 00:21:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 89. [2023-11-29 00:21:50,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 46 states have (on average 2.130434782608696) internal successors, (98), 88 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 00:21:50,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2023-11-29 00:21:50,805 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 6 [2023-11-29 00:21:50,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:50,806 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2023-11-29 00:21:50,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:50,806 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2023-11-29 00:21:50,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:21:50,806 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:50,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:21:50,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:51,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:51,014 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:51,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:51,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1666676706, now seen corresponding path program 1 times [2023-11-29 00:21:51,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:51,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [405697758] [2023-11-29 00:21:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:51,016 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 00:21:51,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:51,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:51,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:51,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:21:51,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:51,112 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 00:21:51,122 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 00:21:51,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:51,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:51,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [405697758] [2023-11-29 00:21:51,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [405697758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:51,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:51,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:21:51,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689862572] [2023-11-29 00:21:51,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:51,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:21:51,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:51,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:21:51,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:51,126 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:51,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:51,379 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2023-11-29 00:21:51,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:21:51,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 00:21:51,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:51,381 INFO L225 Difference]: With dead ends: 81 [2023-11-29 00:21:51,381 INFO L226 Difference]: Without dead ends: 81 [2023-11-29 00:21:51,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:51,383 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 42 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:51,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 73 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:21:51,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-29 00:21:51,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-29 00:21:51,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 46 states have (on average 1.9565217391304348) internal successors, (90), 80 states have internal predecessors, (90), 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 00:21:51,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2023-11-29 00:21:51,391 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 6 [2023-11-29 00:21:51,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:51,392 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2023-11-29 00:21:51,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2023-11-29 00:21:51,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 00:21:51,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:51,393 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 00:21:51,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:51,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:51,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:51,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:51,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1666676707, now seen corresponding path program 1 times [2023-11-29 00:21:51,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:51,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065295212] [2023-11-29 00:21:51,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:51,596 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 00:21:51,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:51,597 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:51,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:51,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:21:51,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:51,650 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 00:21:51,672 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 00:21:51,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:51,672 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:51,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065295212] [2023-11-29 00:21:51,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065295212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:51,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:51,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:21:51,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609679461] [2023-11-29 00:21:51,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:51,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:21:51,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:21:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:51,675 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:51,958 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2023-11-29 00:21:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:21:51,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 00:21:51,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:51,960 INFO L225 Difference]: With dead ends: 86 [2023-11-29 00:21:51,960 INFO L226 Difference]: Without dead ends: 86 [2023-11-29 00:21:51,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:51,962 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 16 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:51,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 103 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:21:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-29 00:21:51,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 83. [2023-11-29 00:21:51,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 53 states have (on average 1.830188679245283) internal successors, (97), 82 states have internal predecessors, (97), 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 00:21:51,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2023-11-29 00:21:51,970 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 6 [2023-11-29 00:21:51,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:51,970 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2023-11-29 00:21:51,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:21:51,970 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2023-11-29 00:21:51,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 00:21:51,971 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:51,971 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:51,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:52,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:52,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:52,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:52,174 INFO L85 PathProgramCache]: Analyzing trace with hash 127401718, now seen corresponding path program 1 times [2023-11-29 00:21:52,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:52,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287992406] [2023-11-29 00:21:52,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:52,175 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 00:21:52,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:52,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:52,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:52,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 00:21:52,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:52,231 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 00:21:52,231 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:52,231 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:52,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287992406] [2023-11-29 00:21:52,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287992406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:52,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:52,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:21:52,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114945111] [2023-11-29 00:21:52,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:52,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:21:52,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:21:52,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:52,233 INFO L87 Difference]: Start difference. First operand 83 states and 97 transitions. Second operand has 3 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 00:21:52,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:52,429 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2023-11-29 00:21:52,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:21:52,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 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 00:21:52,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:52,431 INFO L225 Difference]: With dead ends: 85 [2023-11-29 00:21:52,432 INFO L226 Difference]: Without dead ends: 82 [2023-11-29 00:21:52,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:52,433 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 1 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:52,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 112 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:21:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-29 00:21:52,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-29 00:21:52,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 52 states have (on average 1.8269230769230769) internal successors, (95), 81 states have internal predecessors, (95), 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 00:21:52,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 95 transitions. [2023-11-29 00:21:52,440 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 95 transitions. Word has length 7 [2023-11-29 00:21:52,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:52,441 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 95 transitions. [2023-11-29 00:21:52,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 00:21:52,441 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 95 transitions. [2023-11-29 00:21:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 00:21:52,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:52,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:52,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:52,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:52,644 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:52,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:52,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1063044748, now seen corresponding path program 1 times [2023-11-29 00:21:52,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:52,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740585625] [2023-11-29 00:21:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:52,645 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 00:21:52,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:52,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:52,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:52,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:21:52,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:52,766 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 00:21:52,773 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 00:21:52,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:21:52,925 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 14 treesize of output 9 [2023-11-29 00:21:52,945 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:21:52,945 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 00:21:52,968 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 00:21:52,968 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:52,969 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:52,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740585625] [2023-11-29 00:21:52,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740585625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:52,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:52,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:21:52,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320875316] [2023-11-29 00:21:52,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:52,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:21:52,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:52,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:21:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:21:52,971 INFO L87 Difference]: Start difference. First operand 82 states and 95 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 00:21:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:53,182 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2023-11-29 00:21:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:21:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 00:21:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:53,183 INFO L225 Difference]: With dead ends: 79 [2023-11-29 00:21:53,184 INFO L226 Difference]: Without dead ends: 79 [2023-11-29 00:21:53,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:21:53,184 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 27 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:53,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 92 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:21:53,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-29 00:21:53,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 72. [2023-11-29 00:21:53,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 45 states have (on average 1.7777777777777777) internal successors, (80), 71 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 00:21:53,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2023-11-29 00:21:53,188 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 15 [2023-11-29 00:21:53,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:53,189 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2023-11-29 00:21:53,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 00:21:53,189 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2023-11-29 00:21:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:21:53,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:53,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:53,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:53,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:53,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:53,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:53,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1405381866, now seen corresponding path program 1 times [2023-11-29 00:21:53,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:53,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1736114568] [2023-11-29 00:21:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:53,391 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 00:21:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:53,392 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:53,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:53,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:21:53,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:53,565 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 00:21:53,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:53,565 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:53,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1736114568] [2023-11-29 00:21:53,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1736114568] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:53,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:53,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:21:53,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012130314] [2023-11-29 00:21:53,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:53,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:21:53,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:53,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:21:53,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:53,567 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 00:21:53,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:53,679 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2023-11-29 00:21:53,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:21:53,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 16 [2023-11-29 00:21:53,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:53,682 INFO L225 Difference]: With dead ends: 101 [2023-11-29 00:21:53,682 INFO L226 Difference]: Without dead ends: 101 [2023-11-29 00:21:53,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:53,683 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 21 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:53,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 128 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 00:21:53,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-11-29 00:21:53,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2023-11-29 00:21:53,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 64 states have (on average 1.734375) internal successors, (111), 90 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 00:21:53,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 111 transitions. [2023-11-29 00:21:53,690 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 111 transitions. Word has length 16 [2023-11-29 00:21:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:53,691 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 111 transitions. [2023-11-29 00:21:53,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 2 states have internal predecessors, (16), 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 00:21:53,691 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 111 transitions. [2023-11-29 00:21:53,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:21:53,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:53,692 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:53,695 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:53,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:53,895 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:53,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:53,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1405351175, now seen corresponding path program 1 times [2023-11-29 00:21:53,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:53,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353310401] [2023-11-29 00:21:53,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:53,896 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 00:21:53,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:53,897 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:53,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:53,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:21:53,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:53,979 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 00:21:53,994 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 00:21:53,994 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:53,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:53,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353310401] [2023-11-29 00:21:53,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353310401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:53,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:53,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:21:53,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098125153] [2023-11-29 00:21:53,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:53,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:21:53,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:53,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:21:53,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:53,997 INFO L87 Difference]: Start difference. First operand 91 states and 111 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 00:21:54,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:54,173 INFO L93 Difference]: Finished difference Result 87 states and 103 transitions. [2023-11-29 00:21:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:21:54,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-11-29 00:21:54,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:54,175 INFO L225 Difference]: With dead ends: 87 [2023-11-29 00:21:54,175 INFO L226 Difference]: Without dead ends: 87 [2023-11-29 00:21:54,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:54,176 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 11 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:54,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 86 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:21:54,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-11-29 00:21:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-11-29 00:21:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 64 states have (on average 1.609375) internal successors, (103), 86 states have internal predecessors, (103), 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 00:21:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 103 transitions. [2023-11-29 00:21:54,181 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 103 transitions. Word has length 16 [2023-11-29 00:21:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:54,182 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 103 transitions. [2023-11-29 00:21:54,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 00:21:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 103 transitions. [2023-11-29 00:21:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-29 00:21:54,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:54,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:54,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:54,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:54,383 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:54,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:54,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1405351174, now seen corresponding path program 1 times [2023-11-29 00:21:54,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:54,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713870619] [2023-11-29 00:21:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:54,384 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 00:21:54,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:54,385 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:54,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:54,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:21:54,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:54,478 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 00:21:54,498 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 00:21:54,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:54,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:54,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713870619] [2023-11-29 00:21:54,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713870619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:54,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:54,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:21:54,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298309993] [2023-11-29 00:21:54,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:54,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:21:54,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:21:54,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:54,500 INFO L87 Difference]: Start difference. First operand 87 states and 103 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 00:21:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:54,682 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2023-11-29 00:21:54,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:21:54,684 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2023-11-29 00:21:54,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:54,684 INFO L225 Difference]: With dead ends: 83 [2023-11-29 00:21:54,684 INFO L226 Difference]: Without dead ends: 83 [2023-11-29 00:21:54,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:21:54,685 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 7 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:54,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 91 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-29 00:21:54,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-29 00:21:54,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-29 00:21:54,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 64 states have (on average 1.484375) internal successors, (95), 82 states have internal predecessors, (95), 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 00:21:54,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2023-11-29 00:21:54,690 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 16 [2023-11-29 00:21:54,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:54,690 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2023-11-29 00:21:54,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 00:21:54,691 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2023-11-29 00:21:54,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 00:21:54,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:54,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:54,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:54,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:54,892 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:54,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:54,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1922638355, now seen corresponding path program 1 times [2023-11-29 00:21:54,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:54,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438655270] [2023-11-29 00:21:54,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:54,893 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 00:21:54,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:54,894 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:54,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:55,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:21:55,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:55,017 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 00:21:55,030 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 21 treesize of output 20 [2023-11-29 00:21:55,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:21:55,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2023-11-29 00:21:55,222 INFO L349 Elim1Store]: treesize reduction 54, result has 23.9 percent of original size [2023-11-29 00:21:55,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 30 [2023-11-29 00:21:55,292 INFO L349 Elim1Store]: treesize reduction 26, result has 3.7 percent of original size [2023-11-29 00:21:55,292 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 4 new quantified variables, introduced 3 case distinctions, treesize of input 51 treesize of output 20 [2023-11-29 00:21:55,311 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 00:21:55,312 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:55,312 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:55,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438655270] [2023-11-29 00:21:55,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438655270] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:55,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:55,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:21:55,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214382380] [2023-11-29 00:21:55,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:55,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:21:55,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:55,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:21:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:21:55,314 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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 00:21:57,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:21:58,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:21:58,015 INFO L93 Difference]: Finished difference Result 109 states and 127 transitions. [2023-11-29 00:21:58,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:21:58,016 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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 18 [2023-11-29 00:21:58,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:21:58,016 INFO L225 Difference]: With dead ends: 109 [2023-11-29 00:21:58,017 INFO L226 Difference]: Without dead ends: 109 [2023-11-29 00:21:58,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:21:58,017 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 19 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:21:58,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 199 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-29 00:21:58,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-11-29 00:21:58,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 99. [2023-11-29 00:21:58,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.4625) internal successors, (117), 98 states have internal predecessors, (117), 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 00:21:58,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-11-29 00:21:58,021 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 18 [2023-11-29 00:21:58,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:21:58,022 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-11-29 00:21:58,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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 00:21:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-11-29 00:21:58,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-29 00:21:58,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:21:58,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:21:58,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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)] Forceful destruction successful, exit code 0 [2023-11-29 00:21:58,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:58,225 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:21:58,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:21:58,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1922638354, now seen corresponding path program 1 times [2023-11-29 00:21:58,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:21:58,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867124294] [2023-11-29 00:21:58,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:21:58,226 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 00:21:58,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:21:58,227 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:58,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:21:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:21:58,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-29 00:21:58,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:21:58,374 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 00:21:58,380 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 00:21:58,449 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 00:21:58,458 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 00:21:58,504 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 19 treesize of output 18 [2023-11-29 00:21:58,524 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 19 treesize of output 18 [2023-11-29 00:21:58,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:21:58,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:21:58,722 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-29 00:21:58,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 13 [2023-11-29 00:21:58,754 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:21:58,754 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 00:21:58,967 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 30 treesize of output 28 [2023-11-29 00:21:58,976 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 36 [2023-11-29 00:21:59,089 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-29 00:21:59,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 36 [2023-11-29 00:21:59,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 00:21:59,133 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 00:21:59,134 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:21:59,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:21:59,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867124294] [2023-11-29 00:21:59,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867124294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:21:59,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:21:59,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:21:59,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388850810] [2023-11-29 00:21:59,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:21:59,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 00:21:59,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:21:59,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 00:21:59,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:21:59,136 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 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 00:22:00,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:00,582 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2023-11-29 00:22:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:22:00,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 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 18 [2023-11-29 00:22:00,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:00,584 INFO L225 Difference]: With dead ends: 112 [2023-11-29 00:22:00,584 INFO L226 Difference]: Without dead ends: 112 [2023-11-29 00:22:00,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:22:00,585 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 37 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:00,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 237 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-29 00:22:00,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-11-29 00:22:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2023-11-29 00:22:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.4375) internal successors, (115), 98 states have internal predecessors, (115), 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 00:22:00,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2023-11-29 00:22:00,588 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 18 [2023-11-29 00:22:00,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:00,588 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2023-11-29 00:22:00,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 9 states have internal predecessors, (18), 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 00:22:00,589 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2023-11-29 00:22:00,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 00:22:00,589 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:00,590 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:00,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:00,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:00,790 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:00,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:00,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1629477680, now seen corresponding path program 1 times [2023-11-29 00:22:00,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:00,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576617550] [2023-11-29 00:22:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:00,791 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 00:22:00,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:00,792 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:00,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:00,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 00:22:00,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:00,872 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 00:22:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:00,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:00,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:00,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576617550] [2023-11-29 00:22:00,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576617550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:00,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:00,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:22:00,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550900160] [2023-11-29 00:22:00,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:00,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:22:00,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:00,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:22:00,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:22:00,917 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:22:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:01,293 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2023-11-29 00:22:01,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:22:01,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:22:01,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:01,295 INFO L225 Difference]: With dead ends: 107 [2023-11-29 00:22:01,295 INFO L226 Difference]: Without dead ends: 107 [2023-11-29 00:22:01,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:22:01,296 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 48 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:01,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 104 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:22:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-11-29 00:22:01,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2023-11-29 00:22:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 82 states have (on average 1.451219512195122) internal successors, (119), 100 states have internal predecessors, (119), 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 00:22:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2023-11-29 00:22:01,300 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 21 [2023-11-29 00:22:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:01,307 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2023-11-29 00:22:01,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:22:01,307 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2023-11-29 00:22:01,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-29 00:22:01,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:01,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:01,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:01,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:01,511 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:01,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:01,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1629477681, now seen corresponding path program 1 times [2023-11-29 00:22:01,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:01,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007306303] [2023-11-29 00:22:01,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:01,512 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 00:22:01,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:01,513 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:01,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:01,593 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:22:01,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:01,600 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 00:22:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:01,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:01,681 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:01,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007306303] [2023-11-29 00:22:01,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007306303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:01,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:01,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:22:01,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246259443] [2023-11-29 00:22:01,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:01,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:22:01,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:01,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:22:01,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:22:01,682 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:22:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:02,059 INFO L93 Difference]: Finished difference Result 134 states and 158 transitions. [2023-11-29 00:22:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:22:02,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:22:02,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:02,061 INFO L225 Difference]: With dead ends: 134 [2023-11-29 00:22:02,061 INFO L226 Difference]: Without dead ends: 134 [2023-11-29 00:22:02,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:22:02,061 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 32 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:02,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 134 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:22:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-11-29 00:22:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 124. [2023-11-29 00:22:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 105 states have (on average 1.438095238095238) internal successors, (151), 123 states have internal predecessors, (151), 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 00:22:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 151 transitions. [2023-11-29 00:22:02,065 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 151 transitions. Word has length 21 [2023-11-29 00:22:02,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:02,065 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 151 transitions. [2023-11-29 00:22:02,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 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 00:22:02,065 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 151 transitions. [2023-11-29 00:22:02,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:22:02,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:02,066 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:02,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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)] Ended with exit code 0 [2023-11-29 00:22:02,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:02,267 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:02,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:02,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1025799739, now seen corresponding path program 1 times [2023-11-29 00:22:02,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:02,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8496521] [2023-11-29 00:22:02,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:02,268 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 00:22:02,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:02,269 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:02,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (15)] Waiting until timeout for monitored process [2023-11-29 00:22:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:02,344 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:22:02,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:02,382 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 00:22:02,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:02,425 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 00:22:02,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:02,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [8496521] [2023-11-29 00:22:02,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [8496521] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:02,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:02,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 00:22:02,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333293801] [2023-11-29 00:22:02,426 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:02,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:22:02,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:02,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:22:02,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:22:02,427 INFO L87 Difference]: Start difference. First operand 124 states and 151 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 00:22:02,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:02,738 INFO L93 Difference]: Finished difference Result 283 states and 343 transitions. [2023-11-29 00:22:02,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:22:02,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 22 [2023-11-29 00:22:02,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:02,740 INFO L225 Difference]: With dead ends: 283 [2023-11-29 00:22:02,740 INFO L226 Difference]: Without dead ends: 283 [2023-11-29 00:22:02,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 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 00:22:02,741 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 141 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:02,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 248 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:22:02,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-29 00:22:02,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 255. [2023-11-29 00:22:02,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 236 states have (on average 1.4364406779661016) internal successors, (339), 254 states have internal predecessors, (339), 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 00:22:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 339 transitions. [2023-11-29 00:22:02,749 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 339 transitions. Word has length 22 [2023-11-29 00:22:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:02,750 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 339 transitions. [2023-11-29 00:22:02,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 00:22:02,750 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 339 transitions. [2023-11-29 00:22:02,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:22:02,751 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:02,751 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:02,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (15)] Ended with exit code 0 [2023-11-29 00:22:02,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:02,951 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:02,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:02,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1025797615, now seen corresponding path program 1 times [2023-11-29 00:22:02,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:02,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851900743] [2023-11-29 00:22:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:02,952 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 00:22:02,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:02,953 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:02,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (16)] Waiting until timeout for monitored process [2023-11-29 00:22:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:03,041 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:22:03,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:03,046 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 00:22:03,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:03,093 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:03,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:03,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851900743] [2023-11-29 00:22:03,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851900743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:03,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:03,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:22:03,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833745714] [2023-11-29 00:22:03,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:03,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:22:03,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:03,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:22:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:22:03,095 INFO L87 Difference]: Start difference. First operand 255 states and 339 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 00:22:03,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:03,602 INFO L93 Difference]: Finished difference Result 294 states and 386 transitions. [2023-11-29 00:22:03,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:22:03,602 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2023-11-29 00:22:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:03,604 INFO L225 Difference]: With dead ends: 294 [2023-11-29 00:22:03,604 INFO L226 Difference]: Without dead ends: 294 [2023-11-29 00:22:03,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:22:03,605 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 72 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:03,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 127 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:22:03,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2023-11-29 00:22:03,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 272. [2023-11-29 00:22:03,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 253 states have (on average 1.4703557312252964) internal successors, (372), 271 states have internal predecessors, (372), 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 00:22:03,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 372 transitions. [2023-11-29 00:22:03,614 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 372 transitions. Word has length 22 [2023-11-29 00:22:03,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:03,614 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 372 transitions. [2023-11-29 00:22:03,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 00:22:03,614 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 372 transitions. [2023-11-29 00:22:03,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-29 00:22:03,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:03,615 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:03,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (16)] Ended with exit code 0 [2023-11-29 00:22:03,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:03,815 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:03,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:03,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1025797614, now seen corresponding path program 1 times [2023-11-29 00:22:03,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:03,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694053435] [2023-11-29 00:22:03,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:03,816 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 00:22:03,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:03,817 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:03,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (17)] Waiting until timeout for monitored process [2023-11-29 00:22:03,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:03,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:22:03,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:03,897 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 00:22:03,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:03,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:03,997 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:03,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694053435] [2023-11-29 00:22:03,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694053435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:03,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:03,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:22:03,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947898644] [2023-11-29 00:22:03,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:03,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:22:03,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:03,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:22:03,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:22:03,998 INFO L87 Difference]: Start difference. First operand 272 states and 372 transitions. Second operand has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 00:22:04,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:04,486 INFO L93 Difference]: Finished difference Result 337 states and 465 transitions. [2023-11-29 00:22:04,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:22:04,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 22 [2023-11-29 00:22:04,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:04,489 INFO L225 Difference]: With dead ends: 337 [2023-11-29 00:22:04,489 INFO L226 Difference]: Without dead ends: 337 [2023-11-29 00:22:04,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:22:04,490 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 55 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:04,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 155 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-29 00:22:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2023-11-29 00:22:04,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 304. [2023-11-29 00:22:04,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 285 states have (on average 1.5228070175438597) internal successors, (434), 303 states have internal predecessors, (434), 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 00:22:04,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 434 transitions. [2023-11-29 00:22:04,498 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 434 transitions. Word has length 22 [2023-11-29 00:22:04,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:04,498 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 434 transitions. [2023-11-29 00:22:04,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 00:22:04,498 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 434 transitions. [2023-11-29 00:22:04,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:22:04,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:04,499 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:04,502 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (17)] Ended with exit code 0 [2023-11-29 00:22:04,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:04,699 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:04,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:04,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2051026185, now seen corresponding path program 1 times [2023-11-29 00:22:04,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:04,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594963242] [2023-11-29 00:22:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:04,700 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 00:22:04,700 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:04,701 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:04,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (18)] Waiting until timeout for monitored process [2023-11-29 00:22:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:04,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:22:04,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:04,806 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 00:22:04,819 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 00:22:04,839 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 21 treesize of output 20 [2023-11-29 00:22:04,878 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:22:04,879 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2023-11-29 00:22:05,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:22:05,045 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 24 treesize of output 10 [2023-11-29 00:22:05,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:05,062 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:05,062 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:05,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594963242] [2023-11-29 00:22:05,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594963242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:05,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:05,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:22:05,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100801533] [2023-11-29 00:22:05,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:05,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:22:05,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:05,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:22:05,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:22:05,064 INFO L87 Difference]: Start difference. First operand 304 states and 434 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) 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 00:22:05,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:05,941 INFO L93 Difference]: Finished difference Result 367 states and 516 transitions. [2023-11-29 00:22:05,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:22:05,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) 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 24 [2023-11-29 00:22:05,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:05,944 INFO L225 Difference]: With dead ends: 367 [2023-11-29 00:22:05,944 INFO L226 Difference]: Without dead ends: 367 [2023-11-29 00:22:05,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:22:05,945 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 73 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:05,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 169 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:22:05,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2023-11-29 00:22:05,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 324. [2023-11-29 00:22:05,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 305 states have (on average 1.5245901639344261) internal successors, (465), 323 states have internal predecessors, (465), 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 00:22:05,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 465 transitions. [2023-11-29 00:22:05,954 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 465 transitions. Word has length 24 [2023-11-29 00:22:05,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:05,955 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 465 transitions. [2023-11-29 00:22:05,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) 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 00:22:05,955 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 465 transitions. [2023-11-29 00:22:05,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-29 00:22:05,956 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:05,956 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:05,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (18)] Ended with exit code 0 [2023-11-29 00:22:06,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:06,156 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:06,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:06,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2051026186, now seen corresponding path program 1 times [2023-11-29 00:22:06,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:06,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655498120] [2023-11-29 00:22:06,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:06,157 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 00:22:06,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:06,158 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:06,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (19)] Waiting until timeout for monitored process [2023-11-29 00:22:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:06,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:22:06,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:06,273 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 00:22:06,279 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 00:22:06,304 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 19 treesize of output 18 [2023-11-29 00:22:06,313 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 19 treesize of output 18 [2023-11-29 00:22:06,348 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:22:06,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:22:06,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:22:06,584 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:22:06,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 00:22:06,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 00:22:06,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:06,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:06,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:06,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655498120] [2023-11-29 00:22:06,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655498120] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:06,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:06,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:22:06,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044408932] [2023-11-29 00:22:06,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:06,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:22:06,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:06,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:22:06,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:22:06,615 INFO L87 Difference]: Start difference. First operand 324 states and 465 transitions. Second operand has 8 states, 8 states have (on average 3.0) 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 00:22:07,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:07,436 INFO L93 Difference]: Finished difference Result 363 states and 497 transitions. [2023-11-29 00:22:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:22:07,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) 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 24 [2023-11-29 00:22:07,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:07,438 INFO L225 Difference]: With dead ends: 363 [2023-11-29 00:22:07,438 INFO L226 Difference]: Without dead ends: 363 [2023-11-29 00:22:07,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-11-29 00:22:07,439 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 72 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:07,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 279 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:22:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2023-11-29 00:22:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 308. [2023-11-29 00:22:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 289 states have (on average 1.4878892733564013) internal successors, (430), 307 states have internal predecessors, (430), 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 00:22:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 430 transitions. [2023-11-29 00:22:07,449 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 430 transitions. Word has length 24 [2023-11-29 00:22:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:07,449 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 430 transitions. [2023-11-29 00:22:07,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) 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 00:22:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 430 transitions. [2023-11-29 00:22:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-29 00:22:07,450 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:07,450 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:07,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (19)] Ended with exit code 0 [2023-11-29 00:22:07,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:07,650 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:07,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:07,651 INFO L85 PathProgramCache]: Analyzing trace with hash -842698756, now seen corresponding path program 1 times [2023-11-29 00:22:07,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:07,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930757083] [2023-11-29 00:22:07,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:07,651 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 00:22:07,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:07,652 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:07,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (20)] Waiting until timeout for monitored process [2023-11-29 00:22:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:07,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:22:07,739 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:07,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:07,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:07,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:07,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930757083] [2023-11-29 00:22:07,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930757083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:07,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:07,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:22:07,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243697614] [2023-11-29 00:22:07,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:07,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:22:07,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:07,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:22:07,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:22:07,877 INFO L87 Difference]: Start difference. First operand 308 states and 430 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 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 00:22:08,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:08,295 INFO L93 Difference]: Finished difference Result 326 states and 434 transitions. [2023-11-29 00:22:08,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:22:08,295 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 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) Word has length 25 [2023-11-29 00:22:08,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:08,297 INFO L225 Difference]: With dead ends: 326 [2023-11-29 00:22:08,297 INFO L226 Difference]: Without dead ends: 326 [2023-11-29 00:22:08,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:22:08,298 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 108 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:08,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 164 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:22:08,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2023-11-29 00:22:08,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 302. [2023-11-29 00:22:08,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 283 states have (on average 1.4946996466431095) internal successors, (423), 301 states have internal predecessors, (423), 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 00:22:08,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 423 transitions. [2023-11-29 00:22:08,307 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 423 transitions. Word has length 25 [2023-11-29 00:22:08,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:08,307 INFO L495 AbstractCegarLoop]: Abstraction has 302 states and 423 transitions. [2023-11-29 00:22:08,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 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 00:22:08,307 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 423 transitions. [2023-11-29 00:22:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 00:22:08,308 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:08,308 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:08,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (20)] Ended with exit code 0 [2023-11-29 00:22:08,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:08,511 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:08,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1917970929, now seen corresponding path program 1 times [2023-11-29 00:22:08,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:08,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [285104435] [2023-11-29 00:22:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:08,512 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 00:22:08,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:08,513 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:08,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (21)] Waiting until timeout for monitored process [2023-11-29 00:22:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:08,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:22:08,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:08,754 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~1#1.base_20| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~x~1#1.base_20|) (_ bv0 1)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~x~1#1.base_20| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-29 00:22:08,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-29 00:22:08,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:12,978 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:12,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [285104435] [2023-11-29 00:22:12,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [285104435] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:12,978 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:12,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-11-29 00:22:12,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485698014] [2023-11-29 00:22:12,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:12,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:22:12,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:12,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:22:12,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2023-11-29 00:22:12,979 INFO L87 Difference]: Start difference. First operand 302 states and 423 transitions. Second operand has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 00:22:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:13,594 INFO L93 Difference]: Finished difference Result 307 states and 427 transitions. [2023-11-29 00:22:13,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:22:13,595 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 29 [2023-11-29 00:22:13,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:13,596 INFO L225 Difference]: With dead ends: 307 [2023-11-29 00:22:13,596 INFO L226 Difference]: Without dead ends: 297 [2023-11-29 00:22:13,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=32, Invalid=80, Unknown=2, NotChecked=18, Total=132 [2023-11-29 00:22:13,597 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 7 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:13,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 165 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 97 Unchecked, 0.5s Time] [2023-11-29 00:22:13,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2023-11-29 00:22:13,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2023-11-29 00:22:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 278 states have (on average 1.5) internal successors, (417), 296 states have internal predecessors, (417), 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 00:22:13,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 417 transitions. [2023-11-29 00:22:13,605 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 417 transitions. Word has length 29 [2023-11-29 00:22:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:13,605 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 417 transitions. [2023-11-29 00:22:13,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 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 00:22:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 417 transitions. [2023-11-29 00:22:13,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 00:22:13,606 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:13,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:13,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (21)] Ended with exit code 0 [2023-11-29 00:22:13,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:13,806 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:13,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:13,807 INFO L85 PathProgramCache]: Analyzing trace with hash 196868094, now seen corresponding path program 1 times [2023-11-29 00:22:13,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:13,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1321953195] [2023-11-29 00:22:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:13,807 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 00:22:13,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:13,808 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:13,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (22)] Waiting until timeout for monitored process [2023-11-29 00:22:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:14,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:22:14,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:14,016 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 00:22:14,042 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 00:22:14,070 INFO L349 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2023-11-29 00:22:14,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 treesize of output 24 [2023-11-29 00:22:14,155 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-29 00:22:14,156 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 27 treesize of output 22 [2023-11-29 00:22:14,202 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 00:22:14,202 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 30 treesize of output 14 [2023-11-29 00:22:14,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:14,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:14,313 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:14,313 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:14,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1321953195] [2023-11-29 00:22:14,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1321953195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:14,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:14,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2023-11-29 00:22:14,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601946166] [2023-11-29 00:22:14,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:14,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-29 00:22:14,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:14,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-29 00:22:14,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:22:14,314 INFO L87 Difference]: Start difference. First operand 297 states and 417 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 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 00:22:14,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:14,982 INFO L93 Difference]: Finished difference Result 296 states and 413 transitions. [2023-11-29 00:22:14,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:22:14,982 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 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 29 [2023-11-29 00:22:14,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:14,984 INFO L225 Difference]: With dead ends: 296 [2023-11-29 00:22:14,984 INFO L226 Difference]: Without dead ends: 296 [2023-11-29 00:22:14,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:22:14,985 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 18 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:14,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 208 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:22:14,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-29 00:22:14,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2023-11-29 00:22:14,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 278 states have (on average 1.485611510791367) internal successors, (413), 295 states have internal predecessors, (413), 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 00:22:14,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 413 transitions. [2023-11-29 00:22:14,992 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 413 transitions. Word has length 29 [2023-11-29 00:22:14,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:14,992 INFO L495 AbstractCegarLoop]: Abstraction has 296 states and 413 transitions. [2023-11-29 00:22:14,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 11 states have internal predecessors, (35), 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 00:22:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 413 transitions. [2023-11-29 00:22:14,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-29 00:22:14,993 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:14,993 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:14,998 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (22)] Ended with exit code 0 [2023-11-29 00:22:15,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:15,195 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:15,195 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:15,195 INFO L85 PathProgramCache]: Analyzing trace with hash 196868095, now seen corresponding path program 1 times [2023-11-29 00:22:15,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:15,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957707942] [2023-11-29 00:22:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:15,196 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 00:22:15,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:15,197 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:15,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (23)] Waiting until timeout for monitored process [2023-11-29 00:22:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:15,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-29 00:22:15,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:15,461 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 00:22:15,527 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 00:22:15,534 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 00:22:15,577 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2023-11-29 00:22:15,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 18 [2023-11-29 00:22:15,719 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-29 00:22:15,719 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 25 treesize of output 20 [2023-11-29 00:22:15,749 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-11-29 00:22:15,749 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 19 treesize of output 18 [2023-11-29 00:22:15,808 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 00:22:15,808 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 28 treesize of output 12 [2023-11-29 00:22:15,817 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-29 00:22:15,817 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 15 treesize of output 7 [2023-11-29 00:22:15,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:15,850 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:16,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:16,455 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:16,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957707942] [2023-11-29 00:22:16,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957707942] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:16,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:16,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2023-11-29 00:22:16,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973597799] [2023-11-29 00:22:16,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:16,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:22:16,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:16,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:22:16,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:22:16,457 INFO L87 Difference]: Start difference. First operand 296 states and 413 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) 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 00:22:18,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:18,357 INFO L93 Difference]: Finished difference Result 318 states and 436 transitions. [2023-11-29 00:22:18,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:22:18,358 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) 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 29 [2023-11-29 00:22:18,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:18,360 INFO L225 Difference]: With dead ends: 318 [2023-11-29 00:22:18,360 INFO L226 Difference]: Without dead ends: 318 [2023-11-29 00:22:18,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2023-11-29 00:22:18,361 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 22 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:18,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 334 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 00:22:18,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-11-29 00:22:18,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 266. [2023-11-29 00:22:18,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 249 states have (on average 1.502008032128514) internal successors, (374), 265 states have internal predecessors, (374), 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 00:22:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 374 transitions. [2023-11-29 00:22:18,366 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 374 transitions. Word has length 29 [2023-11-29 00:22:18,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:18,366 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 374 transitions. [2023-11-29 00:22:18,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) 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 00:22:18,367 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 374 transitions. [2023-11-29 00:22:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 00:22:18,367 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:18,367 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:22:18,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (23)] Forceful destruction successful, exit code 0 [2023-11-29 00:22:18,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:18,568 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:18,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:18,568 INFO L85 PathProgramCache]: Analyzing trace with hash 179683623, now seen corresponding path program 1 times [2023-11-29 00:22:18,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:18,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395422417] [2023-11-29 00:22:18,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:18,569 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 00:22:18,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:18,569 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:18,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (24)] Waiting until timeout for monitored process [2023-11-29 00:22:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:18,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:22:18,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:18,724 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 00:22:18,772 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:22:18,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 20 [2023-11-29 00:22:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:18,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:18,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:18,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395422417] [2023-11-29 00:22:18,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395422417] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:18,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:18,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2023-11-29 00:22:18,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460329194] [2023-11-29 00:22:18,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:18,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:22:18,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:22:18,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:22:18,872 INFO L87 Difference]: Start difference. First operand 266 states and 374 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 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 00:22:19,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:19,239 INFO L93 Difference]: Finished difference Result 288 states and 389 transitions. [2023-11-29 00:22:19,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:22:19,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 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 31 [2023-11-29 00:22:19,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:19,242 INFO L225 Difference]: With dead ends: 288 [2023-11-29 00:22:19,242 INFO L226 Difference]: Without dead ends: 288 [2023-11-29 00:22:19,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:22:19,242 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 54 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:19,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 106 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 00:22:19,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-29 00:22:19,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 265. [2023-11-29 00:22:19,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 249 states have (on average 1.4779116465863453) internal successors, (368), 264 states have internal predecessors, (368), 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 00:22:19,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 368 transitions. [2023-11-29 00:22:19,249 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 368 transitions. Word has length 31 [2023-11-29 00:22:19,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:19,250 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 368 transitions. [2023-11-29 00:22:19,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 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 00:22:19,250 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 368 transitions. [2023-11-29 00:22:19,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 00:22:19,250 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:19,251 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-29 00:22:19,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (24)] Ended with exit code 0 [2023-11-29 00:22:19,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:19,451 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:19,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:19,451 INFO L85 PathProgramCache]: Analyzing trace with hash 179683624, now seen corresponding path program 1 times [2023-11-29 00:22:19,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:19,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1495615714] [2023-11-29 00:22:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:19,452 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 00:22:19,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:19,453 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:19,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (25)] Waiting until timeout for monitored process [2023-11-29 00:22:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:19,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:22:19,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:19,612 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 00:22:19,698 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 00:22:19,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 14 [2023-11-29 00:22:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:19,748 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:20,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:20,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1495615714] [2023-11-29 00:22:20,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1495615714] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:20,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:20,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4] total 6 [2023-11-29 00:22:20,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756972076] [2023-11-29 00:22:20,159 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:20,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:22:20,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:20,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:22:20,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:22:20,160 INFO L87 Difference]: Start difference. First operand 265 states and 368 transitions. Second operand has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 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 00:22:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:20,842 INFO L93 Difference]: Finished difference Result 385 states and 533 transitions. [2023-11-29 00:22:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 00:22:20,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 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 31 [2023-11-29 00:22:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:20,845 INFO L225 Difference]: With dead ends: 385 [2023-11-29 00:22:20,845 INFO L226 Difference]: Without dead ends: 385 [2023-11-29 00:22:20,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:22:20,845 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 92 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:20,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 217 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:22:20,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-11-29 00:22:20,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 322. [2023-11-29 00:22:20,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 306 states have (on average 1.4411764705882353) internal successors, (441), 321 states have internal predecessors, (441), 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 00:22:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 441 transitions. [2023-11-29 00:22:20,851 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 441 transitions. Word has length 31 [2023-11-29 00:22:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:20,851 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 441 transitions. [2023-11-29 00:22:20,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.833333333333334) internal successors, (59), 7 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 00:22:20,852 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 441 transitions. [2023-11-29 00:22:20,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-29 00:22:20,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:20,852 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:20,856 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (25)] Ended with exit code 0 [2023-11-29 00:22:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:21,053 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:21,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash -763085952, now seen corresponding path program 1 times [2023-11-29 00:22:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:21,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [124114197] [2023-11-29 00:22:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:21,054 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 00:22:21,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:21,055 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:21,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (26)] Waiting until timeout for monitored process [2023-11-29 00:22:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:21,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:22:21,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:21,335 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 00:22:21,341 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 00:22:21,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:22:21,441 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 14 treesize of output 9 [2023-11-29 00:22:21,456 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:22:21,456 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 00:22:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:21,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:22,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:22,017 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:22,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [124114197] [2023-11-29 00:22:22,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [124114197] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:22,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:22,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-11-29 00:22:22,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862397903] [2023-11-29 00:22:22,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:22,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:22:22,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:22,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:22:22,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:22:22,019 INFO L87 Difference]: Start difference. First operand 322 states and 441 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 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 00:22:22,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:22,615 INFO L93 Difference]: Finished difference Result 351 states and 474 transitions. [2023-11-29 00:22:22,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:22:22,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 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 32 [2023-11-29 00:22:22,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:22,618 INFO L225 Difference]: With dead ends: 351 [2023-11-29 00:22:22,618 INFO L226 Difference]: Without dead ends: 351 [2023-11-29 00:22:22,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-29 00:22:22,619 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 57 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:22,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 168 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:22:22,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-11-29 00:22:22,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 347. [2023-11-29 00:22:22,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 331 states have (on average 1.4259818731117824) internal successors, (472), 346 states have internal predecessors, (472), 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 00:22:22,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 472 transitions. [2023-11-29 00:22:22,628 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 472 transitions. Word has length 32 [2023-11-29 00:22:22,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:22,628 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 472 transitions. [2023-11-29 00:22:22,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 8 states have internal predecessors, (61), 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 00:22:22,628 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 472 transitions. [2023-11-29 00:22:22,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-29 00:22:22,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:22,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:22,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (26)] Ended with exit code 0 [2023-11-29 00:22:22,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:22,836 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:22,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:22,836 INFO L85 PathProgramCache]: Analyzing trace with hash 2114141091, now seen corresponding path program 1 times [2023-11-29 00:22:22,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:22,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616524100] [2023-11-29 00:22:22,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:22,837 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 00:22:22,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:22,838 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:22,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (27)] Waiting until timeout for monitored process [2023-11-29 00:22:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:22,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:22:22,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:23,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 00:22:23,054 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:23,054 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:23,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616524100] [2023-11-29 00:22:23,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616524100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:23,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:23,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 00:22:23,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295809647] [2023-11-29 00:22:23,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:23,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:22:23,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:23,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:22:23,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:22:23,056 INFO L87 Difference]: Start difference. First operand 347 states and 472 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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 00:22:23,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:23,415 INFO L93 Difference]: Finished difference Result 361 states and 471 transitions. [2023-11-29 00:22:23,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:22:23,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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 33 [2023-11-29 00:22:23,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:23,417 INFO L225 Difference]: With dead ends: 361 [2023-11-29 00:22:23,417 INFO L226 Difference]: Without dead ends: 361 [2023-11-29 00:22:23,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:22:23,418 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 58 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:23,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 133 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-29 00:22:23,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2023-11-29 00:22:23,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 289. [2023-11-29 00:22:23,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 273 states have (on average 1.3992673992673992) internal successors, (382), 288 states have internal predecessors, (382), 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 00:22:23,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 382 transitions. [2023-11-29 00:22:23,423 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 382 transitions. Word has length 33 [2023-11-29 00:22:23,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:23,427 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 382 transitions. [2023-11-29 00:22:23,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 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 00:22:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 382 transitions. [2023-11-29 00:22:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 00:22:23,427 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:23,427 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:23,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (27)] Ended with exit code 0 [2023-11-29 00:22:23,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:23,628 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:23,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:23,628 INFO L85 PathProgramCache]: Analyzing trace with hash 170112602, now seen corresponding path program 1 times [2023-11-29 00:22:23,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:23,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240202313] [2023-11-29 00:22:23,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:23,629 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 00:22:23,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:23,630 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:23,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (28)] Waiting until timeout for monitored process [2023-11-29 00:22:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:23,776 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:22:23,778 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:23,781 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 00:22:23,799 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 00:22:23,855 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 19 treesize of output 11 [2023-11-29 00:22:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:23,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:23,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:23,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240202313] [2023-11-29 00:22:23,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240202313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:23,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:23,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:22:23,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805979879] [2023-11-29 00:22:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:23,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:22:23,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:23,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:22:23,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:22:23,869 INFO L87 Difference]: Start difference. First operand 289 states and 382 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 00:22:24,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:24,510 INFO L93 Difference]: Finished difference Result 305 states and 395 transitions. [2023-11-29 00:22:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:22:24,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 35 [2023-11-29 00:22:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:24,513 INFO L225 Difference]: With dead ends: 305 [2023-11-29 00:22:24,513 INFO L226 Difference]: Without dead ends: 305 [2023-11-29 00:22:24,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:22:24,513 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 38 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:24,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 175 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-29 00:22:24,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-11-29 00:22:24,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 291. [2023-11-29 00:22:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 275 states have (on average 1.4036363636363636) internal successors, (386), 290 states have internal predecessors, (386), 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 00:22:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 386 transitions. [2023-11-29 00:22:24,520 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 386 transitions. Word has length 35 [2023-11-29 00:22:24,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:24,520 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 386 transitions. [2023-11-29 00:22:24,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 00:22:24,520 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 386 transitions. [2023-11-29 00:22:24,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-29 00:22:24,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:24,521 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:24,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (28)] Ended with exit code 0 [2023-11-29 00:22:24,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:24,721 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:24,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:24,722 INFO L85 PathProgramCache]: Analyzing trace with hash 170112603, now seen corresponding path program 1 times [2023-11-29 00:22:24,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:24,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69592249] [2023-11-29 00:22:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:24,722 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 00:22:24,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:24,723 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:24,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (29)] Waiting until timeout for monitored process [2023-11-29 00:22:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:24,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 00:22:24,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:24,874 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 00:22:24,917 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 00:22:24,923 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 00:22:25,026 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 17 treesize of output 9 [2023-11-29 00:22:25,047 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:25,047 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:25,047 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:25,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69592249] [2023-11-29 00:22:25,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69592249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:25,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:25,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:22:25,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209626477] [2023-11-29 00:22:25,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:25,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 00:22:25,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:25,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 00:22:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-29 00:22:25,049 INFO L87 Difference]: Start difference. First operand 291 states and 386 transitions. Second operand has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 00:22:25,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:25,879 INFO L93 Difference]: Finished difference Result 315 states and 400 transitions. [2023-11-29 00:22:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 00:22:25,880 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 35 [2023-11-29 00:22:25,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:25,881 INFO L225 Difference]: With dead ends: 315 [2023-11-29 00:22:25,881 INFO L226 Difference]: Without dead ends: 315 [2023-11-29 00:22:25,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-29 00:22:25,882 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 37 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:25,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 231 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:22:25,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2023-11-29 00:22:25,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 291. [2023-11-29 00:22:25,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 275 states have (on average 1.4) internal successors, (385), 290 states have internal predecessors, (385), 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 00:22:25,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 385 transitions. [2023-11-29 00:22:25,886 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 385 transitions. Word has length 35 [2023-11-29 00:22:25,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:25,886 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 385 transitions. [2023-11-29 00:22:25,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.833333333333333) internal successors, (35), 7 states have internal predecessors, (35), 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 00:22:25,886 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 385 transitions. [2023-11-29 00:22:25,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 00:22:25,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:25,887 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:25,890 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (29)] Ended with exit code 0 [2023-11-29 00:22:26,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:26,087 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:26,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash 978524868, now seen corresponding path program 1 times [2023-11-29 00:22:26,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:26,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020773928] [2023-11-29 00:22:26,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:26,088 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 00:22:26,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:26,089 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:26,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (30)] Waiting until timeout for monitored process [2023-11-29 00:22:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:26,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:22:26,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:26,249 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 00:22:26,269 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 00:22:26,322 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 19 treesize of output 11 [2023-11-29 00:22:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:26,348 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:26,348 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:26,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020773928] [2023-11-29 00:22:26,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020773928] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:26,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:26,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:22:26,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951216331] [2023-11-29 00:22:26,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:26,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:22:26,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:26,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:22:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:22:26,350 INFO L87 Difference]: Start difference. First operand 291 states and 385 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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 00:22:27,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:27,169 INFO L93 Difference]: Finished difference Result 307 states and 395 transitions. [2023-11-29 00:22:27,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:22:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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 36 [2023-11-29 00:22:27,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:27,171 INFO L225 Difference]: With dead ends: 307 [2023-11-29 00:22:27,171 INFO L226 Difference]: Without dead ends: 307 [2023-11-29 00:22:27,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:22:27,172 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 52 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:27,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 187 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 00:22:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2023-11-29 00:22:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 291. [2023-11-29 00:22:27,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 276 states have (on average 1.391304347826087) internal successors, (384), 290 states have internal predecessors, (384), 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 00:22:27,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 384 transitions. [2023-11-29 00:22:27,180 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 384 transitions. Word has length 36 [2023-11-29 00:22:27,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:27,180 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 384 transitions. [2023-11-29 00:22:27,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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 00:22:27,180 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 384 transitions. [2023-11-29 00:22:27,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-29 00:22:27,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:27,181 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:27,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (30)] Forceful destruction successful, exit code 0 [2023-11-29 00:22:27,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:27,381 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:27,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:27,382 INFO L85 PathProgramCache]: Analyzing trace with hash 978524869, now seen corresponding path program 1 times [2023-11-29 00:22:27,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:27,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720935415] [2023-11-29 00:22:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:27,382 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 00:22:27,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:27,383 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:27,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (31)] Waiting until timeout for monitored process [2023-11-29 00:22:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:27,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:22:27,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:27,557 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 00:22:27,609 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 00:22:27,615 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:22:27,725 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 17 treesize of output 9 [2023-11-29 00:22:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:27,770 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:27,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:27,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720935415] [2023-11-29 00:22:27,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720935415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:27,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:27,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 00:22:27,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285332411] [2023-11-29 00:22:27,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:27,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:22:27,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:27,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:22:27,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:22:27,772 INFO L87 Difference]: Start difference. First operand 291 states and 384 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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 00:22:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:28,712 INFO L93 Difference]: Finished difference Result 321 states and 406 transitions. [2023-11-29 00:22:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:22:28,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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 36 [2023-11-29 00:22:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:28,713 INFO L225 Difference]: With dead ends: 321 [2023-11-29 00:22:28,713 INFO L226 Difference]: Without dead ends: 321 [2023-11-29 00:22:28,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:22:28,714 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 52 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:28,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 238 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:22:28,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-11-29 00:22:28,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 293. [2023-11-29 00:22:28,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 278 states have (on average 1.3884892086330936) internal successors, (386), 292 states have internal predecessors, (386), 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 00:22:28,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 386 transitions. [2023-11-29 00:22:28,718 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 386 transitions. Word has length 36 [2023-11-29 00:22:28,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:28,718 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 386 transitions. [2023-11-29 00:22:28,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 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 00:22:28,718 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 386 transitions. [2023-11-29 00:22:28,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-29 00:22:28,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:28,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:28,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (31)] Forceful destruction successful, exit code 0 [2023-11-29 00:22:28,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:28,919 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:28,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:28,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1291415916, now seen corresponding path program 1 times [2023-11-29 00:22:28,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:28,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1887123650] [2023-11-29 00:22:28,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:28,920 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 00:22:28,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:28,921 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:28,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (32)] Waiting until timeout for monitored process [2023-11-29 00:22:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:29,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:22:29,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:29,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:22:29,389 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 15 treesize of output 7 [2023-11-29 00:22:29,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:29,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:22:29,510 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:29,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1887123650] [2023-11-29 00:22:29,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1887123650] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:22:29,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:22:29,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 00:22:29,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866165323] [2023-11-29 00:22:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:22:29,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:22:29,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:29,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:22:29,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:22:29,511 INFO L87 Difference]: Start difference. First operand 293 states and 386 transitions. Second operand has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 00:22:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:31,096 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2023-11-29 00:22:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 00:22:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 39 [2023-11-29 00:22:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:31,098 INFO L225 Difference]: With dead ends: 303 [2023-11-29 00:22:31,098 INFO L226 Difference]: Without dead ends: 303 [2023-11-29 00:22:31,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-11-29 00:22:31,099 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 94 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:31,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 222 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 00:22:31,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-29 00:22:31,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 294. [2023-11-29 00:22:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 279 states have (on average 1.3870967741935485) internal successors, (387), 293 states have internal predecessors, (387), 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 00:22:31,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 387 transitions. [2023-11-29 00:22:31,105 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 387 transitions. Word has length 39 [2023-11-29 00:22:31,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:31,105 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 387 transitions. [2023-11-29 00:22:31,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 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 00:22:31,105 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 387 transitions. [2023-11-29 00:22:31,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 00:22:31,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:31,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:31,109 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (32)] Ended with exit code 0 [2023-11-29 00:22:31,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:31,306 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:31,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:31,307 INFO L85 PathProgramCache]: Analyzing trace with hash -976177314, now seen corresponding path program 1 times [2023-11-29 00:22:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:31,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962517058] [2023-11-29 00:22:31,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:31,307 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 00:22:31,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:31,308 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:31,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (33)] Waiting until timeout for monitored process [2023-11-29 00:22:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:31,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:22:31,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:31,481 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 7 [2023-11-29 00:22:31,505 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:22:31,506 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 00:22:31,529 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 00:22:31,580 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 16 treesize of output 8 [2023-11-29 00:22:31,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:31,593 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:31,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:31,652 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:31,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962517058] [2023-11-29 00:22:31,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962517058] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:31,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:31,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2023-11-29 00:22:31,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620470580] [2023-11-29 00:22:31,653 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:31,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 00:22:31,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 00:22:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 00:22:31,654 INFO L87 Difference]: Start difference. First operand 294 states and 387 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 00:22:32,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:32,532 INFO L93 Difference]: Finished difference Result 334 states and 418 transitions. [2023-11-29 00:22:32,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:22:32,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 40 [2023-11-29 00:22:32,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:32,534 INFO L225 Difference]: With dead ends: 334 [2023-11-29 00:22:32,534 INFO L226 Difference]: Without dead ends: 334 [2023-11-29 00:22:32,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-29 00:22:32,535 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 52 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:32,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 266 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 00:22:32,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2023-11-29 00:22:32,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 294. [2023-11-29 00:22:32,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 279 states have (on average 1.3835125448028673) internal successors, (386), 293 states have internal predecessors, (386), 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 00:22:32,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 386 transitions. [2023-11-29 00:22:32,541 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 386 transitions. Word has length 40 [2023-11-29 00:22:32,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:32,542 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 386 transitions. [2023-11-29 00:22:32,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 8 states have internal predecessors, (40), 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 00:22:32,542 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 386 transitions. [2023-11-29 00:22:32,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-29 00:22:32,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:32,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:32,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (33)] Ended with exit code 0 [2023-11-29 00:22:32,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:32,743 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:32,743 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:32,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1379433479, now seen corresponding path program 1 times [2023-11-29 00:22:32,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:32,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566417718] [2023-11-29 00:22:32,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:32,744 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 00:22:32,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:32,745 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:32,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (34)] Waiting until timeout for monitored process [2023-11-29 00:22:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:32,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 00:22:32,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:33,108 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 00:22:33,135 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 00:22:33,158 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2023-11-29 00:22:33,158 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 20 treesize of output 23 [2023-11-29 00:22:33,168 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 00:22:33,388 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 00:22:33,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 00:22:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:33,495 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:33,952 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~y~0#1.offset|))) (and (forall ((|ULTIMATE.start_main_~x~0#1.base| (_ BitVec 32)) (v_ArrVal_1448 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (bvslt (select (select (store |c_#memory_int#1| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1448) |c_ULTIMATE.start_main_~y~0#1.base|) .cse0) (_ bv16 32)))) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| (_ BitVec 32)) (v_ArrVal_1448 (Array (_ BitVec 32) (_ BitVec 32)))) (bvslt (select (select (store |c_#memory_int#1| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1448) |c_ULTIMATE.start_main_~y~0#1.base|) .cse0) (_ bv16 32))) (= |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~y~0#1.offset|)))) is different from false [2023-11-29 00:22:34,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:22:34,007 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 24 treesize of output 25 [2023-11-29 00:22:34,014 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 26 [2023-11-29 00:22:34,058 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 11 treesize of output 7 [2023-11-29 00:22:34,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:22:34,102 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 1 case distinctions, treesize of input 24 treesize of output 25 [2023-11-29 00:22:34,105 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:22:34,108 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 22 treesize of output 10 [2023-11-29 00:22:36,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:36,870 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:36,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566417718] [2023-11-29 00:22:36,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566417718] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:36,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:36,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-29 00:22:36,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336129077] [2023-11-29 00:22:36,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:36,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 00:22:36,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:36,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 00:22:36,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=370, Unknown=1, NotChecked=38, Total=462 [2023-11-29 00:22:36,871 INFO L87 Difference]: Start difference. First operand 294 states and 386 transitions. Second operand has 22 states, 22 states have (on average 3.5) internal successors, (77), 21 states have internal predecessors, (77), 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 00:22:48,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:48,801 INFO L93 Difference]: Finished difference Result 436 states and 546 transitions. [2023-11-29 00:22:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-29 00:22:48,802 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.5) internal successors, (77), 21 states have internal predecessors, (77), 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 40 [2023-11-29 00:22:48,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:48,804 INFO L225 Difference]: With dead ends: 436 [2023-11-29 00:22:48,804 INFO L226 Difference]: Without dead ends: 436 [2023-11-29 00:22:48,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=275, Invalid=2080, Unknown=1, NotChecked=94, Total=2450 [2023-11-29 00:22:48,806 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 191 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 678 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 190 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:48,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 678 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 978 Invalid, 0 Unknown, 190 Unchecked, 4.9s Time] [2023-11-29 00:22:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-29 00:22:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 340. [2023-11-29 00:22:48,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 325 states have (on average 1.353846153846154) internal successors, (440), 339 states have internal predecessors, (440), 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 00:22:48,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 440 transitions. [2023-11-29 00:22:48,813 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 440 transitions. Word has length 40 [2023-11-29 00:22:48,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:48,813 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 440 transitions. [2023-11-29 00:22:48,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.5) internal successors, (77), 21 states have internal predecessors, (77), 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 00:22:48,813 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 440 transitions. [2023-11-29 00:22:48,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 00:22:48,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:48,814 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:48,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (34)] Ended with exit code 0 [2023-11-29 00:22:49,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:49,015 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:49,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:49,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1450192760, now seen corresponding path program 1 times [2023-11-29 00:22:49,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:49,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395739653] [2023-11-29 00:22:49,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:49,016 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 00:22:49,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:49,016 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:49,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (35)] Waiting until timeout for monitored process [2023-11-29 00:22:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:49,237 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-29 00:22:49,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:49,259 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-11-29 00:22:49,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 12 treesize of output 22 [2023-11-29 00:22:49,320 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 00:22:49,355 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 19 treesize of output 18 [2023-11-29 00:22:49,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:22:49,701 INFO L349 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2023-11-29 00:22:49,701 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 22 treesize of output 30 [2023-11-29 00:22:49,807 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 16 [2023-11-29 00:22:49,823 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 16 [2023-11-29 00:22:49,859 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 16 [2023-11-29 00:22:49,888 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 16 [2023-11-29 00:22:49,912 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 16 [2023-11-29 00:22:50,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:22:50,072 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 16 [2023-11-29 00:22:50,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 00:22:50,228 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 00:22:50,228 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:50,297 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1538 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1538) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|)) (_ bv1 1)))) is different from false [2023-11-29 00:22:50,316 INFO L349 Elim1Store]: treesize reduction 7, result has 74.1 percent of original size [2023-11-29 00:22:50,316 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 33 treesize of output 32 [2023-11-29 00:22:51,309 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:22:51,309 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 2 case distinctions, treesize of input 23 treesize of output 29 [2023-11-29 00:22:51,313 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 30 treesize of output 22 [2023-11-29 00:22:51,317 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 00:22:51,350 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:51,350 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:22:51,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395739653] [2023-11-29 00:22:51,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395739653] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:22:51,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:22:51,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 18 [2023-11-29 00:22:51,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235315730] [2023-11-29 00:22:51,350 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:22:51,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 00:22:51,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:22:51,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 00:22:51,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=255, Unknown=3, NotChecked=32, Total=342 [2023-11-29 00:22:51,352 INFO L87 Difference]: Start difference. First operand 340 states and 440 transitions. Second operand has 19 states, 18 states have (on average 4.444444444444445) internal successors, (80), 19 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 00:22:53,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:22:53,949 INFO L93 Difference]: Finished difference Result 397 states and 503 transitions. [2023-11-29 00:22:53,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-29 00:22:53,951 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.444444444444445) internal successors, (80), 19 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) Word has length 41 [2023-11-29 00:22:53,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:22:53,953 INFO L225 Difference]: With dead ends: 397 [2023-11-29 00:22:53,953 INFO L226 Difference]: Without dead ends: 397 [2023-11-29 00:22:53,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 58 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=245, Invalid=878, Unknown=3, NotChecked=64, Total=1190 [2023-11-29 00:22:53,953 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 224 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:22:53,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 416 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 566 Invalid, 0 Unknown, 151 Unchecked, 1.9s Time] [2023-11-29 00:22:53,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-29 00:22:53,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 350. [2023-11-29 00:22:53,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 335 states have (on average 1.355223880597015) internal successors, (454), 349 states have internal predecessors, (454), 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 00:22:53,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 454 transitions. [2023-11-29 00:22:53,958 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 454 transitions. Word has length 41 [2023-11-29 00:22:53,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:22:53,958 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 454 transitions. [2023-11-29 00:22:53,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.444444444444445) internal successors, (80), 19 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 00:22:53,958 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 454 transitions. [2023-11-29 00:22:53,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-29 00:22:53,959 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:22:53,959 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:22:53,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (35)] Ended with exit code 0 [2023-11-29 00:22:54,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:54,159 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:22:54,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:22:54,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1450192759, now seen corresponding path program 1 times [2023-11-29 00:22:54,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:22:54,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436290534] [2023-11-29 00:22:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:22:54,160 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 00:22:54,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:22:54,161 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:22:54,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (36)] Waiting until timeout for monitored process [2023-11-29 00:22:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:22:54,402 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-29 00:22:54,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:22:54,409 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 00:22:54,434 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 00:22:54,440 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 00:22:54,470 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 19 treesize of output 18 [2023-11-29 00:22:54,479 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 19 treesize of output 18 [2023-11-29 00:22:54,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:22:54,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:22:54,835 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:22:54,835 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 00:22:54,927 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 16 [2023-11-29 00:22:54,942 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 16 [2023-11-29 00:22:54,970 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 16 [2023-11-29 00:22:54,993 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 16 [2023-11-29 00:22:55,024 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 16 [2023-11-29 00:22:55,035 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 23 treesize of output 16 [2023-11-29 00:22:55,062 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 16 [2023-11-29 00:22:55,078 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 16 [2023-11-29 00:22:55,102 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 16 [2023-11-29 00:22:55,121 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 16 [2023-11-29 00:22:55,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:22:55,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:22:55,385 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 16 [2023-11-29 00:22:55,389 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 16 [2023-11-29 00:22:55,569 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:22:55,569 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2023-11-29 00:22:55,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 00:22:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:22:55,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:22:55,730 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1638 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~first~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1638) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|))) (forall ((v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_~first~0#1.offset| (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1637) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|)))) is different from false [2023-11-29 00:23:06,957 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse1 (bvadd |c_ULTIMATE.start_main_~x~0#1.offset| (_ bv12 32)))) (and (forall ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= v_ArrVal_1622 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base|) .cse0 (select v_ArrVal_1622 .cse0)))) (forall ((|v_ULTIMATE.start_main_~x~0#1.base_66| (_ BitVec 32))) (or (forall ((v_ArrVal_1638 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1636 (_ BitVec 32)) (v_ArrVal_1632 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1622) |v_ULTIMATE.start_main_~x~0#1.base_66| v_ArrVal_1632) |c_ULTIMATE.start_main_~x~0#1.base|) .cse1 v_ArrVal_1636)) |v_ULTIMATE.start_main_~x~0#1.base_66| v_ArrVal_1638) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_66|) (_ bv0 1))))))) (forall ((v_ArrVal_1621 (_ BitVec 32)) (v_ArrVal_1633 (Array (_ BitVec 32) (_ BitVec 32))) (v_subst_23 (_ BitVec 32)) (v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~x~0#1.base_66| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_66|) (_ bv0 1))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base|) .cse0 v_ArrVal_1621)) |v_ULTIMATE.start_main_~x~0#1.base_66| v_ArrVal_1633) |c_ULTIMATE.start_main_~x~0#1.base|) .cse1 v_subst_23)) |v_ULTIMATE.start_main_~x~0#1.base_66| v_ArrVal_1637) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)))))) is different from false [2023-11-29 00:23:07,014 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse2 (bvadd |c_ULTIMATE.start_main_~x~0#1.offset| (_ bv12 32)))) (and (forall ((v_ArrVal_1621 (_ BitVec 32)) (v_ArrVal_1633 (Array (_ BitVec 32) (_ BitVec 32))) (v_subst_23 (_ BitVec 32)) (v_ArrVal_1637 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_~x~0#1.base_66| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_~x~0#1.base|) .cse0 |c_ULTIMATE.start_main_~x~0#1.offset|) .cse1 v_ArrVal_1621)) |v_ULTIMATE.start_main_~x~0#1.base_66| v_ArrVal_1633) |c_ULTIMATE.start_main_~x~0#1.base|) .cse2 v_subst_23)) |v_ULTIMATE.start_main_~x~0#1.base_66| v_ArrVal_1637) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_66|) (_ bv0 1))))) (forall ((v_ArrVal_1622 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (store (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base|) .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) .cse1 (select v_ArrVal_1622 .cse1)) v_ArrVal_1622)) (forall ((|v_ULTIMATE.start_main_~x~0#1.base_66| (_ BitVec 32))) (or (forall ((v_ArrVal_1638 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1636 (_ BitVec 32)) (v_ArrVal_1632 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1622) |v_ULTIMATE.start_main_~x~0#1.base_66| v_ArrVal_1632) |c_ULTIMATE.start_main_~x~0#1.base|) .cse2 v_ArrVal_1636)) |v_ULTIMATE.start_main_~x~0#1.base_66| v_ArrVal_1638) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_66|) (_ bv0 1))))))))) is different from false [2023-11-29 00:23:07,049 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:23:07,050 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 3 case distinctions, treesize of input 43 treesize of output 53 [2023-11-29 00:23:07,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 32 [2023-11-29 00:23:07,060 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 00:23:07,065 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 00:23:07,067 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 29 treesize of output 27 [2023-11-29 00:23:07,088 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-29 00:23:07,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 00:23:07,142 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-29 00:23:07,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:23:07,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436290534] [2023-11-29 00:23:07,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436290534] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:23:07,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:23:07,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2023-11-29 00:23:07,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645646983] [2023-11-29 00:23:07,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:23:07,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 00:23:07,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:23:07,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 00:23:07,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=281, Unknown=7, NotChecked=108, Total=462 [2023-11-29 00:23:07,144 INFO L87 Difference]: Start difference. First operand 350 states and 454 transitions. Second operand has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 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 00:23:16,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:23:20,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:23:22,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:22,514 INFO L93 Difference]: Finished difference Result 416 states and 525 transitions. [2023-11-29 00:23:22,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-29 00:23:22,515 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 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 41 [2023-11-29 00:23:22,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:22,516 INFO L225 Difference]: With dead ends: 416 [2023-11-29 00:23:22,516 INFO L226 Difference]: Without dead ends: 416 [2023-11-29 00:23:22,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=303, Invalid=1097, Unknown=18, NotChecked=222, Total=1640 [2023-11-29 00:23:22,517 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 131 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 59 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 423 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:22,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 491 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 505 Invalid, 2 Unknown, 423 Unchecked, 9.4s Time] [2023-11-29 00:23:22,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2023-11-29 00:23:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 384. [2023-11-29 00:23:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 369 states have (on average 1.3414634146341464) internal successors, (495), 383 states have internal predecessors, (495), 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 00:23:22,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 495 transitions. [2023-11-29 00:23:22,524 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 495 transitions. Word has length 41 [2023-11-29 00:23:22,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:22,525 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 495 transitions. [2023-11-29 00:23:22,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 22 states have internal predecessors, (78), 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 00:23:22,525 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 495 transitions. [2023-11-29 00:23:22,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-29 00:23:22,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:22,526 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:22,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (36)] Ended with exit code 0 [2023-11-29 00:23:22,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:23:22,726 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:23:22,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:22,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1035269449, now seen corresponding path program 1 times [2023-11-29 00:23:22,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:23:22,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [222062414] [2023-11-29 00:23:22,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:22,727 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 00:23:22,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:23:22,728 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:23:22,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (37)] Waiting until timeout for monitored process [2023-11-29 00:23:23,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:23,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:23:23,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:23:23,067 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 00:23:23,071 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 00:23:23,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:23:23,224 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 14 treesize of output 9 [2023-11-29 00:23:23,252 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 00:23:23,252 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 00:23:23,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:23:23,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 14 treesize of output 9 [2023-11-29 00:23:23,466 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2023-11-29 00:23:23,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-11-29 00:23:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:23:23,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:23:33,258 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:23:33,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:23:33,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [222062414] [2023-11-29 00:23:33,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [222062414] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:23:33,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:23:33,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 00:23:33,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274898096] [2023-11-29 00:23:33,259 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:23:33,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:23:33,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:23:33,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:23:33,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=59, Unknown=2, NotChecked=0, Total=90 [2023-11-29 00:23:33,260 INFO L87 Difference]: Start difference. First operand 384 states and 495 transitions. Second operand has 10 states, 9 states have (on average 9.0) internal successors, (81), 10 states have internal predecessors, (81), 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 00:23:34,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 00:23:34,200 INFO L93 Difference]: Finished difference Result 406 states and 502 transitions. [2023-11-29 00:23:34,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:23:34,200 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 10 states have internal predecessors, (81), 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 42 [2023-11-29 00:23:34,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 00:23:34,202 INFO L225 Difference]: With dead ends: 406 [2023-11-29 00:23:34,203 INFO L226 Difference]: Without dead ends: 406 [2023-11-29 00:23:34,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=49, Invalid=81, Unknown=2, NotChecked=0, Total=132 [2023-11-29 00:23:34,203 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 206 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 00:23:34,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 187 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 00:23:34,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-11-29 00:23:34,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 349. [2023-11-29 00:23:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 335 states have (on average 1.328358208955224) internal successors, (445), 348 states have internal predecessors, (445), 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 00:23:34,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 445 transitions. [2023-11-29 00:23:34,209 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 445 transitions. Word has length 42 [2023-11-29 00:23:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 00:23:34,210 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 445 transitions. [2023-11-29 00:23:34,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 10 states have internal predecessors, (81), 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 00:23:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 445 transitions. [2023-11-29 00:23:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-29 00:23:34,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 00:23:34,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:23:34,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (37)] Ended with exit code 0 [2023-11-29 00:23:34,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:23:34,411 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-29 00:23:34,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:23:34,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1730053363, now seen corresponding path program 1 times [2023-11-29 00:23:34,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:23:34,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024167940] [2023-11-29 00:23:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:23:34,412 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 00:23:34,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:23:34,413 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 00:23:34,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a0b130-6648-4e0f-af47-3e1da363f93d/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 (38)] Waiting until timeout for monitored process [2023-11-29 00:23:34,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:23:34,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 37 conjunts are in the unsatisfiable core [2023-11-29 00:23:34,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:23:34,691 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 00:23:34,707 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 19 treesize of output 18 [2023-11-29 00:23:34,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:23:34,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 00:23:34,776 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 8 treesize of output 1 [2023-11-29 00:23:34,877 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:23:34,878 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 28 [2023-11-29 00:23:35,031 INFO L349 Elim1Store]: treesize reduction 37, result has 32.7 percent of original size [2023-11-29 00:23:35,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 49 [2023-11-29 00:23:35,050 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 00:23:35,067 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 21 treesize of output 15 [2023-11-29 00:23:35,109 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 27 treesize of output 15 [2023-11-29 00:23:35,127 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 27 treesize of output 15 [2023-11-29 00:23:35,148 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 00:23:35,173 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2023-11-29 00:23:35,173 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 35 treesize of output 31 [2023-11-29 00:23:35,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-11-29 00:23:35,566 INFO L349 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2023-11-29 00:23:35,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 16 [2023-11-29 00:23:35,625 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 16 treesize of output 13 [2023-11-29 00:23:35,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:23:35,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:23:37,872 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:23:37,872 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 252 treesize of output 258