./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1 --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 4fecbd384f63aa34e01807a3a6735a322a2435f1312f0df3ed763fde7f43fe0a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:08:49,839 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:08:49,897 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-01 23:08:49,902 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:08:49,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:08:49,923 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:08:49,924 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:08:49,924 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:08:49,925 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:08:49,925 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:08:49,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:08:49,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:08:49,925 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:08:49,925 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:08:49,925 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:08:49,926 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:08:49,926 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 23:08:49,926 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:08:49,926 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 23:08:49,926 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:08:49,926 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-01 23:08:49,926 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-01 23:08:49,926 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-01 23:08:49,926 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:08:49,926 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-01 23:08:49,926 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-01 23:08:49,927 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 23:08:49,927 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:08:49,927 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:08:49,927 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:08:49,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:08:49,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:08:49,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:08:49,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:08:49,927 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:08:49,927 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:08:49,927 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:08:49,927 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:08:49,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:08:49,928 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:08:49,928 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:08:49,928 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:08:49,928 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:08:49,928 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:08:49,928 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:08:49,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:08:49,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:08:49,928 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1 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 -> 4fecbd384f63aa34e01807a3a6735a322a2435f1312f0df3ed763fde7f43fe0a [2024-12-01 23:08:50,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:08:50,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:08:50,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:08:50,188 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:08:50,189 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:08:50,190 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2024-12-01 23:08:52,817 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/data/bc381b68a/b1896876428a4657afa67b98fcc48a5f/FLAG9f1276cd5 [2024-12-01 23:08:53,070 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:08:53,071 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2024-12-01 23:08:53,081 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/data/bc381b68a/b1896876428a4657afa67b98fcc48a5f/FLAG9f1276cd5 [2024-12-01 23:08:53,398 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/data/bc381b68a/b1896876428a4657afa67b98fcc48a5f [2024-12-01 23:08:53,400 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:08:53,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:08:53,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:08:53,402 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:08:53,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:08:53,405 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,406 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@285e7b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53, skipping insertion in model container [2024-12-01 23:08:53,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,430 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:08:53,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:08:53,704 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:08:53,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:08:53,766 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:08:53,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53 WrapperNode [2024-12-01 23:08:53,766 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:08:53,767 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:08:53,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:08:53,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:08:53,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,784 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,803 INFO L138 Inliner]: procedures = 126, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 134 [2024-12-01 23:08:53,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:08:53,804 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:08:53,804 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:08:53,804 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:08:53,814 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,814 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,834 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-12-01 23:08:53,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,842 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,843 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,846 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,847 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,848 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:08:53,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:08:53,852 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:08:53,852 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:08:53,853 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (1/1) ... [2024-12-01 23:08:53,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:08:53,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:08:53,882 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:08:53,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:08:53,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-01 23:08:53,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-01 23:08:53,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-01 23:08:53,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-01 23:08:53,908 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-12-01 23:08:53,908 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-12-01 23:08:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-01 23:08:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:08:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-01 23:08:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-01 23:08:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-01 23:08:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-01 23:08:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-01 23:08:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:08:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 23:08:53,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:08:53,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:08:54,012 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:08:54,013 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:08:54,259 INFO L? ?]: Removed 93 outVars from TransFormulas that were not future-live. [2024-12-01 23:08:54,259 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:08:54,268 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:08:54,269 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-01 23:08:54,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:08:54 BoogieIcfgContainer [2024-12-01 23:08:54,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:08:54,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:08:54,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:08:54,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:08:54,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:08:53" (1/3) ... [2024-12-01 23:08:54,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f45625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:08:54, skipping insertion in model container [2024-12-01 23:08:54,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:08:53" (2/3) ... [2024-12-01 23:08:54,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f45625 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:08:54, skipping insertion in model container [2024-12-01 23:08:54,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:08:54" (3/3) ... [2024-12-01 23:08:54,276 INFO L128 eAbstractionObserver]: Analyzing ICFG sll2c_update_all_reverse.i [2024-12-01 23:08:54,287 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:08:54,288 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll2c_update_all_reverse.i that has 2 procedures, 86 locations, 1 initial locations, 6 loop locations, and 28 error locations. [2024-12-01 23:08:54,320 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:08:54,329 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@320023a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:08:54,330 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-12-01 23:08:54,333 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 82 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:08:54,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-01 23:08:54,337 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:54,337 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-01 23:08:54,338 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:54,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:54,342 INFO L85 PathProgramCache]: Analyzing trace with hash 894752021, now seen corresponding path program 1 times [2024-12-01 23:08:54,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:54,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428694706] [2024-12-01 23:08:54,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:54,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:08:54,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:54,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428694706] [2024-12-01 23:08:54,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428694706] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:54,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:54,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:08:54,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021688828] [2024-12-01 23:08:54,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:54,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:08:54,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:54,544 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:08:54,545 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:08:54,546 INFO L87 Difference]: Start difference. First operand has 86 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 82 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:08:54,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:54,644 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2024-12-01 23:08:54,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:08:54,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-12-01 23:08:54,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:54,650 INFO L225 Difference]: With dead ends: 83 [2024-12-01 23:08:54,650 INFO L226 Difference]: Without dead ends: 80 [2024-12-01 23:08:54,651 INFO L434 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 [2024-12-01 23:08:54,653 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 2 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:54,654 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:08:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-01 23:08:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-01 23:08:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 51 states have (on average 1.6274509803921569) internal successors, (83), 76 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:08:54,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2024-12-01 23:08:54,682 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 6 [2024-12-01 23:08:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:54,682 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2024-12-01 23:08:54,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:08:54,682 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2024-12-01 23:08:54,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-01 23:08:54,683 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:54,683 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-01 23:08:54,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 23:08:54,683 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:54,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:54,684 INFO L85 PathProgramCache]: Analyzing trace with hash 894752022, now seen corresponding path program 1 times [2024-12-01 23:08:54,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:54,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353629399] [2024-12-01 23:08:54,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:54,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:54,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:08:54,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353629399] [2024-12-01 23:08:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353629399] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:54,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:54,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:08:54,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390917200] [2024-12-01 23:08:54,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:54,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:08:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:54,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:08:54,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:08:54,790 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:08:54,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:54,838 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2024-12-01 23:08:54,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:08:54,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-12-01 23:08:54,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:54,840 INFO L225 Difference]: With dead ends: 78 [2024-12-01 23:08:54,840 INFO L226 Difference]: Without dead ends: 78 [2024-12-01 23:08:54,840 INFO L434 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 [2024-12-01 23:08:54,841 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:54,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 144 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:08:54,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-12-01 23:08:54,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-12-01 23:08:54,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.588235294117647) internal successors, (81), 74 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:08:54,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2024-12-01 23:08:54,848 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 6 [2024-12-01 23:08:54,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:54,848 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2024-12-01 23:08:54,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:08:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2024-12-01 23:08:54,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-01 23:08:54,849 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:54,849 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:54,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 23:08:54,849 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:54,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:54,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1374205706, now seen corresponding path program 1 times [2024-12-01 23:08:54,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:54,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880986926] [2024-12-01 23:08:54,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:54,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:54,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:08:54,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:54,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880986926] [2024-12-01 23:08:54,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880986926] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:54,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:54,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:08:54,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136136797] [2024-12-01 23:08:54,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:54,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:08:54,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:54,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:08:54,930 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:08:54,930 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 23:08:54,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:54,946 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-12-01 23:08:54,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:08:54,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-12-01 23:08:54,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:54,947 INFO L225 Difference]: With dead ends: 85 [2024-12-01 23:08:54,947 INFO L226 Difference]: Without dead ends: 85 [2024-12-01 23:08:54,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:08:54,948 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 5 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:54,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 161 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:08:54,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-12-01 23:08:54,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2024-12-01 23:08:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 75 states have internal predecessors, (82), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:08:54,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2024-12-01 23:08:54,956 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 13 [2024-12-01 23:08:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:54,957 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2024-12-01 23:08:54,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 23:08:54,957 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2024-12-01 23:08:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-01 23:08:54,957 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:54,958 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:54,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 23:08:54,958 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:54,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:54,958 INFO L85 PathProgramCache]: Analyzing trace with hash 626265561, now seen corresponding path program 1 times [2024-12-01 23:08:54,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:54,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205323292] [2024-12-01 23:08:54,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:54,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:55,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 23:08:55,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:55,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205323292] [2024-12-01 23:08:55,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205323292] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:55,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:55,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:08:55,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333929829] [2024-12-01 23:08:55,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:55,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:08:55,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:55,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:08:55,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:08:55,091 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:55,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:55,213 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2024-12-01 23:08:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:08:55,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-12-01 23:08:55,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:55,215 INFO L225 Difference]: With dead ends: 78 [2024-12-01 23:08:55,215 INFO L226 Difference]: Without dead ends: 78 [2024-12-01 23:08:55,215 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:08:55,216 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 2 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:55,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 281 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:08:55,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-12-01 23:08:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-12-01 23:08:55,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 74 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:08:55,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2024-12-01 23:08:55,221 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 22 [2024-12-01 23:08:55,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:55,222 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2024-12-01 23:08:55,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:55,222 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2024-12-01 23:08:55,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-01 23:08:55,222 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:55,223 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:55,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 23:08:55,223 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:55,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:55,223 INFO L85 PathProgramCache]: Analyzing trace with hash 626265562, now seen corresponding path program 1 times [2024-12-01 23:08:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:55,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200758483] [2024-12-01 23:08:55,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:55,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:55,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 23:08:55,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:55,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200758483] [2024-12-01 23:08:55,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200758483] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:55,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:55,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:08:55,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415659339] [2024-12-01 23:08:55,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:55,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:08:55,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:55,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:08:55,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:08:55,417 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:55,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:55,518 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2024-12-01 23:08:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:08:55,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-12-01 23:08:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:55,519 INFO L225 Difference]: With dead ends: 77 [2024-12-01 23:08:55,519 INFO L226 Difference]: Without dead ends: 77 [2024-12-01 23:08:55,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:08:55,520 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 1 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:55,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 303 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:08:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-12-01 23:08:55,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-12-01 23:08:55,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 73 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:08:55,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2024-12-01 23:08:55,526 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 22 [2024-12-01 23:08:55,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:55,526 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2024-12-01 23:08:55,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2024-12-01 23:08:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-01 23:08:55,527 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:55,527 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:55,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-01 23:08:55,527 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:55,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:55,528 INFO L85 PathProgramCache]: Analyzing trace with hash -260617209, now seen corresponding path program 1 times [2024-12-01 23:08:55,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:55,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195304246] [2024-12-01 23:08:55,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:55,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 23:08:55,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195304246] [2024-12-01 23:08:55,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195304246] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:08:55,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274651059] [2024-12-01 23:08:55,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:55,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:55,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:08:55,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:08:55,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 23:08:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:55,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-01 23:08:55,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:08:55,943 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 [2024-12-01 23:08:55,989 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2024-12-01 23:08:56,032 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-12-01 23:08:56,032 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 [2024-12-01 23:08:56,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2024-12-01 23:08:56,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:08:56,258 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 23:08:56,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [274651059] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:08:56,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:08:56,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 11 [2024-12-01 23:08:56,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080154227] [2024-12-01 23:08:56,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:08:56,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-01 23:08:56,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:56,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-01 23:08:56,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2024-12-01 23:08:56,260 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 12 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:08:56,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:56,446 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2024-12-01 23:08:56,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:08:56,446 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2024-12-01 23:08:56,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:56,447 INFO L225 Difference]: With dead ends: 76 [2024-12-01 23:08:56,447 INFO L226 Difference]: Without dead ends: 76 [2024-12-01 23:08:56,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=101, Unknown=1, NotChecked=20, Total=156 [2024-12-01 23:08:56,448 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 1 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:56,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 418 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 210 Invalid, 0 Unknown, 76 Unchecked, 0.1s Time] [2024-12-01 23:08:56,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-12-01 23:08:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-12-01 23:08:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 72 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:08:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2024-12-01 23:08:56,453 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 25 [2024-12-01 23:08:56,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:56,453 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2024-12-01 23:08:56,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:08:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2024-12-01 23:08:56,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-01 23:08:56,454 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:56,454 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:56,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 23:08:56,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:56,656 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:56,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:56,656 INFO L85 PathProgramCache]: Analyzing trace with hash -260617208, now seen corresponding path program 1 times [2024-12-01 23:08:56,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:56,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115685604] [2024-12-01 23:08:56,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:56,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:57,093 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:08:57,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:57,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115685604] [2024-12-01 23:08:57,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115685604] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:08:57,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187690302] [2024-12-01 23:08:57,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:57,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:57,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:08:57,095 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:08:57,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 23:08:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:57,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-01 23:08:57,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:08:57,211 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 [2024-12-01 23:08:57,215 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 [2024-12-01 23:08:57,381 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-12-01 23:08:57,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:08:57,428 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 [2024-12-01 23:08:57,439 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:08:57,439 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 [2024-12-01 23:08:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-12-01 23:08:57,491 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:08:57,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187690302] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:08:57,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:08:57,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2024-12-01 23:08:57,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953562192] [2024-12-01 23:08:57,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:08:57,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-01 23:08:57,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:57,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-01 23:08:57,636 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=257, Unknown=1, NotChecked=32, Total=342 [2024-12-01 23:08:57,636 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 17 states, 16 states have (on average 2.5) internal successors, (40), 14 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-01 23:08:57,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:57,923 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2024-12-01 23:08:57,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:08:57,923 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 14 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2024-12-01 23:08:57,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:57,925 INFO L225 Difference]: With dead ends: 83 [2024-12-01 23:08:57,925 INFO L226 Difference]: Without dead ends: 83 [2024-12-01 23:08:57,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=319, Unknown=1, NotChecked=36, Total=420 [2024-12-01 23:08:57,925 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 2 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:57,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 482 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 255 Invalid, 0 Unknown, 87 Unchecked, 0.2s Time] [2024-12-01 23:08:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-12-01 23:08:57,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2024-12-01 23:08:57,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 77 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:08:57,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2024-12-01 23:08:57,932 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 25 [2024-12-01 23:08:57,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:57,932 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2024-12-01 23:08:57,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.5) internal successors, (40), 14 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-01 23:08:57,933 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2024-12-01 23:08:57,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-12-01 23:08:57,934 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:57,934 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:57,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 23:08:58,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:58,134 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:58,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:58,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1076644497, now seen corresponding path program 1 times [2024-12-01 23:08:58,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:58,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507131250] [2024-12-01 23:08:58,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:58,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 23:08:58,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:58,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507131250] [2024-12-01 23:08:58,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507131250] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:58,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:58,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:08:58,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619016337] [2024-12-01 23:08:58,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:58,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:08:58,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:58,318 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:08:58,318 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:08:58,319 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:58,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:58,526 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2024-12-01 23:08:58,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:08:58,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-12-01 23:08:58,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:58,528 INFO L225 Difference]: With dead ends: 85 [2024-12-01 23:08:58,528 INFO L226 Difference]: Without dead ends: 85 [2024-12-01 23:08:58,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:08:58,529 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 42 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:58,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 402 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:08:58,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-12-01 23:08:58,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-12-01 23:08:58,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 80 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:08:58,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2024-12-01 23:08:58,535 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 31 [2024-12-01 23:08:58,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:58,535 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2024-12-01 23:08:58,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:58,535 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2024-12-01 23:08:58,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-12-01 23:08:58,536 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:58,536 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:08:58,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-01 23:08:58,537 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:58,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:58,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1076644498, now seen corresponding path program 1 times [2024-12-01 23:08:58,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:58,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356765906] [2024-12-01 23:08:58,538 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:58,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 23:08:58,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:58,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356765906] [2024-12-01 23:08:58,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356765906] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:58,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:58,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:08:58,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085808857] [2024-12-01 23:08:58,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:58,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:08:58,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:58,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:08:58,836 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:08:58,836 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:59,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:59,011 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2024-12-01 23:08:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:08:59,012 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-12-01 23:08:59,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:59,012 INFO L225 Difference]: With dead ends: 85 [2024-12-01 23:08:59,012 INFO L226 Difference]: Without dead ends: 85 [2024-12-01 23:08:59,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:08:59,013 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 39 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:59,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 451 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:08:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-12-01 23:08:59,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-12-01 23:08:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 80 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:08:59,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2024-12-01 23:08:59,018 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 31 [2024-12-01 23:08:59,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:59,018 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2024-12-01 23:08:59,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:59,019 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2024-12-01 23:08:59,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-01 23:08:59,019 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:59,020 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:08:59,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 23:08:59,020 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:59,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:59,020 INFO L85 PathProgramCache]: Analyzing trace with hash -350639951, now seen corresponding path program 1 times [2024-12-01 23:08:59,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:59,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438376944] [2024-12-01 23:08:59,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:59,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:08:59,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:59,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438376944] [2024-12-01 23:08:59,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438376944] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:59,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:59,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:08:59,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20412900] [2024-12-01 23:08:59,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:59,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:08:59,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:59,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:08:59,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:08:59,106 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:59,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:59,133 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2024-12-01 23:08:59,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:08:59,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-12-01 23:08:59,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:59,134 INFO L225 Difference]: With dead ends: 116 [2024-12-01 23:08:59,134 INFO L226 Difference]: Without dead ends: 116 [2024-12-01 23:08:59,135 INFO L434 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 [2024-12-01 23:08:59,135 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 120 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:59,135 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 154 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:08:59,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-12-01 23:08:59,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 87. [2024-12-01 23:08:59,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 62 states have (on average 1.467741935483871) internal successors, (91), 82 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:08:59,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2024-12-01 23:08:59,140 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 33 [2024-12-01 23:08:59,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:59,141 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2024-12-01 23:08:59,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:59,141 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2024-12-01 23:08:59,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-01 23:08:59,142 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:59,142 INFO L218 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, 1, 1, 1, 1, 1] [2024-12-01 23:08:59,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-01 23:08:59,142 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:59,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash -499535768, now seen corresponding path program 1 times [2024-12-01 23:08:59,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:59,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20680318] [2024-12-01 23:08:59,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:59,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:59,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:08:59,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:59,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20680318] [2024-12-01 23:08:59,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20680318] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:08:59,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:08:59,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 23:08:59,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308260108] [2024-12-01 23:08:59,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:08:59,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:08:59,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:08:59,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:08:59,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:08:59,255 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:59,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:08:59,302 INFO L93 Difference]: Finished difference Result 113 states and 125 transitions. [2024-12-01 23:08:59,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:08:59,303 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2024-12-01 23:08:59,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:08:59,303 INFO L225 Difference]: With dead ends: 113 [2024-12-01 23:08:59,303 INFO L226 Difference]: Without dead ends: 113 [2024-12-01 23:08:59,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:08:59,304 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 115 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:08:59,304 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 223 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:08:59,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-12-01 23:08:59,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2024-12-01 23:08:59,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 87 states have internal predecessors, (97), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:08:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2024-12-01 23:08:59,308 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 34 [2024-12-01 23:08:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:08:59,308 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2024-12-01 23:08:59,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:08:59,308 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2024-12-01 23:08:59,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-01 23:08:59,309 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:08:59,309 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:08:59,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-01 23:08:59,309 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:08:59,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:08:59,310 INFO L85 PathProgramCache]: Analyzing trace with hash -499535699, now seen corresponding path program 1 times [2024-12-01 23:08:59,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:08:59,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219372219] [2024-12-01 23:08:59,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:59,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:08:59,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:08:59,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:08:59,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219372219] [2024-12-01 23:08:59,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219372219] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:08:59,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875324632] [2024-12-01 23:08:59,731 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:08:59,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:08:59,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:08:59,732 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:08:59,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 23:08:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:08:59,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-12-01 23:08:59,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:08:59,850 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 [2024-12-01 23:08:59,899 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:08:59,899 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 11 treesize of output 11 [2024-12-01 23:08:59,912 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 [2024-12-01 23:08:59,936 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:08:59,936 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 [2024-12-01 23:09:00,057 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 [2024-12-01 23:09:00,062 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:00,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:00,090 INFO L349 Elim1Store]: treesize reduction 5, result has 66.7 percent of original size [2024-12-01 23:09:00,090 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 19 treesize of output 18 [2024-12-01 23:09:00,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:00,188 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 18 treesize of output 19 [2024-12-01 23:09:00,192 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 [2024-12-01 23:09:00,200 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 [2024-12-01 23:09:00,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875324632] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:00,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:09:00,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 22 [2024-12-01 23:09:00,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032029107] [2024-12-01 23:09:00,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:00,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-01 23:09:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:00,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-01 23:09:00,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=577, Unknown=17, NotChecked=0, Total=650 [2024-12-01 23:09:00,269 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 20 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:00,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:00,717 INFO L93 Difference]: Finished difference Result 104 states and 117 transitions. [2024-12-01 23:09:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-01 23:09:00,718 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 20 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-12-01 23:09:00,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:00,719 INFO L225 Difference]: With dead ends: 104 [2024-12-01 23:09:00,719 INFO L226 Difference]: Without dead ends: 104 [2024-12-01 23:09:00,719 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=831, Unknown=19, NotChecked=0, Total=930 [2024-12-01 23:09:00,719 INFO L435 NwaCegarLoop]: 68 mSDtfsCounter, 9 mSDsluCounter, 1028 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:00,720 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1096 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 23:09:00,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-12-01 23:09:00,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 101. [2024-12-01 23:09:00,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 76 states have (on average 1.4210526315789473) internal successors, (108), 96 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:09:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 114 transitions. [2024-12-01 23:09:00,722 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 114 transitions. Word has length 34 [2024-12-01 23:09:00,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:00,723 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 114 transitions. [2024-12-01 23:09:00,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 20 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 114 transitions. [2024-12-01 23:09:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-01 23:09:00,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:00,724 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:09:00,732 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 23:09:00,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:00,924 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:00,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:00,925 INFO L85 PathProgramCache]: Analyzing trace with hash -499535698, now seen corresponding path program 1 times [2024-12-01 23:09:00,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:00,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64198959] [2024-12-01 23:09:00,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:00,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:01,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:01,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:01,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64198959] [2024-12-01 23:09:01,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64198959] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:01,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608585812] [2024-12-01 23:09:01,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:01,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:01,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:01,594 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:01,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 23:09:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:01,702 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-12-01 23:09:01,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:01,712 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 [2024-12-01 23:09:01,717 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 [2024-12-01 23:09:01,843 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:09:01,843 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 [2024-12-01 23:09:01,860 WARN L851 $PredicateComparison]: unable to prove that (and (or (< 7 (select |c_#length| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) (exists ((|v_#length_BEFORE_CALL_4| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_4| |c_#length|))) (and (<= 8 (select |v_#length_BEFORE_CALL_4| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) (= |c_ULTIMATE.start_sll_circular_create_#t~ret5#1.base| .cse0) (= |c_#length| (store |v_#length_BEFORE_CALL_4| .cse0 (select |c_#length| .cse0))))))) (not (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| |c_ULTIMATE.start_sll_circular_create_#t~ret5#1.base|)) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2024-12-01 23:09:01,862 WARN L873 $PredicateComparison]: unable to prove that (and (or (< 7 (select |c_#length| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) (exists ((|v_#length_BEFORE_CALL_4| (Array Int Int))) (let ((.cse0 (@diff |v_#length_BEFORE_CALL_4| |c_#length|))) (and (<= 8 (select |v_#length_BEFORE_CALL_4| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) (= |c_ULTIMATE.start_sll_circular_create_#t~ret5#1.base| .cse0) (= |c_#length| (store |v_#length_BEFORE_CALL_4| .cse0 (select |c_#length| .cse0))))))) (not (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| |c_ULTIMATE.start_sll_circular_create_#t~ret5#1.base|)) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from true [2024-12-01 23:09:01,885 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 11 treesize of output 7 [2024-12-01 23:09:01,893 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 [2024-12-01 23:09:01,928 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:01,929 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 50 treesize of output 45 [2024-12-01 23:09:01,933 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 [2024-12-01 23:09:02,086 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 [2024-12-01 23:09:02,091 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 [2024-12-01 23:09:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:02,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:02,338 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_551 (Array Int Int)) (v_ArrVal_550 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_551) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_550) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((v_ArrVal_551 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_551) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) 4)))) is different from false [2024-12-01 23:09:02,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:02,462 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 20 treesize of output 21 [2024-12-01 23:09:02,465 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 34 treesize of output 26 [2024-12-01 23:09:02,479 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:02,479 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 37 treesize of output 38 [2024-12-01 23:09:02,487 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:02,487 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 29 treesize of output 30 [2024-12-01 23:09:02,490 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:02,493 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 27 treesize of output 19 [2024-12-01 23:09:02,495 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:02,497 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 20 treesize of output 12 [2024-12-01 23:09:02,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608585812] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:02,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:09:02,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 24 [2024-12-01 23:09:02,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366851005] [2024-12-01 23:09:02,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:02,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-01 23:09:02,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:02,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-01 23:09:02,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1015, Unknown=24, NotChecked=130, Total=1260 [2024-12-01 23:09:02,662 INFO L87 Difference]: Start difference. First operand 101 states and 114 transitions. Second operand has 25 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:09:02,872 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|))) (and (or (< 7 .cse0) (exists ((|v_#length_BEFORE_CALL_4| (Array Int Int))) (let ((.cse1 (@diff |v_#length_BEFORE_CALL_4| |c_#length|))) (and (<= 8 (select |v_#length_BEFORE_CALL_4| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) (= |c_ULTIMATE.start_sll_circular_create_#t~ret5#1.base| .cse1) (= |c_#length| (store |v_#length_BEFORE_CALL_4| .cse1 (select |c_#length| .cse1))))))) (not (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| |c_ULTIMATE.start_sll_circular_create_#t~ret5#1.base|)) (<= 8 .cse0) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|))) is different from false [2024-12-01 23:09:02,874 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#length| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|))) (and (or (< 7 .cse0) (exists ((|v_#length_BEFORE_CALL_4| (Array Int Int))) (let ((.cse1 (@diff |v_#length_BEFORE_CALL_4| |c_#length|))) (and (<= 8 (select |v_#length_BEFORE_CALL_4| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) (= |c_ULTIMATE.start_sll_circular_create_#t~ret5#1.base| .cse1) (= |c_#length| (store |v_#length_BEFORE_CALL_4| .cse1 (select |c_#length| .cse1))))))) (not (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| |c_ULTIMATE.start_sll_circular_create_#t~ret5#1.base|)) (<= 8 .cse0) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset| 0) (= |c_ULTIMATE.start_sll_circular_create_~head~0#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|))) is different from true [2024-12-01 23:09:03,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:03,280 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2024-12-01 23:09:03,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-01 23:09:03,280 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-12-01 23:09:03,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:03,281 INFO L225 Difference]: With dead ends: 103 [2024-12-01 23:09:03,281 INFO L226 Difference]: Without dead ends: 103 [2024-12-01 23:09:03,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=124, Invalid=1344, Unknown=26, NotChecked=228, Total=1722 [2024-12-01 23:09:03,282 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 14 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 743 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:03,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 1054 Invalid, 871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 743 Invalid, 0 Unknown, 125 Unchecked, 0.4s Time] [2024-12-01 23:09:03,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-12-01 23:09:03,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2024-12-01 23:09:03,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 95 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:09:03,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2024-12-01 23:09:03,286 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 34 [2024-12-01 23:09:03,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:03,287 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2024-12-01 23:09:03,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.7083333333333333) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:09:03,287 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2024-12-01 23:09:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-01 23:09:03,287 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:03,288 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:03,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 23:09:03,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-01 23:09:03,488 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:03,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:03,489 INFO L85 PathProgramCache]: Analyzing trace with hash 43924889, now seen corresponding path program 2 times [2024-12-01 23:09:03,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:03,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147097081] [2024-12-01 23:09:03,489 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 23:09:03,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:03,515 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 23:09:03,515 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:09:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:09:03,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:03,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147097081] [2024-12-01 23:09:03,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147097081] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:03,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760489234] [2024-12-01 23:09:03,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 23:09:03,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:03,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:03,579 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:03,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 23:09:03,706 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 23:09:03,707 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:09:03,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:09:03,710 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:03,732 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-01 23:09:03,733 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:09:03,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760489234] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:03,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:09:03,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-12-01 23:09:03,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609508299] [2024-12-01 23:09:03,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:03,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:09:03,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:03,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:09:03,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:03,734 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:09:03,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:03,747 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-12-01 23:09:03,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:09:03,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-12-01 23:09:03,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:03,748 INFO L225 Difference]: With dead ends: 85 [2024-12-01 23:09:03,748 INFO L226 Difference]: Without dead ends: 85 [2024-12-01 23:09:03,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:03,749 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:03,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 223 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-12-01 23:09:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-12-01 23:09:03,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.435483870967742) internal successors, (89), 81 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:03,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 93 transitions. [2024-12-01 23:09:03,752 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 93 transitions. Word has length 37 [2024-12-01 23:09:03,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:03,752 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 93 transitions. [2024-12-01 23:09:03,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:09:03,753 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 93 transitions. [2024-12-01 23:09:03,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-12-01 23:09:03,753 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:03,753 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:09:03,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 23:09:03,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-01 23:09:03,954 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:03,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:03,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1841114223, now seen corresponding path program 1 times [2024-12-01 23:09:03,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:03,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36100031] [2024-12-01 23:09:03,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:03,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:03,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:09:04,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:04,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36100031] [2024-12-01 23:09:04,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36100031] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:04,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694189212] [2024-12-01 23:09:04,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:04,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:04,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:04,040 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:04,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 23:09:04,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:04,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:09:04,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:04,208 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:09:04,208 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:09:04,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694189212] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:04,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-01 23:09:04,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2024-12-01 23:09:04,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289414580] [2024-12-01 23:09:04,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:04,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:04,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:04,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:04,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:09:04,210 INFO L87 Difference]: Start difference. First operand 85 states and 93 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:04,261 INFO L93 Difference]: Finished difference Result 103 states and 111 transitions. [2024-12-01 23:09:04,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:09:04,262 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2024-12-01 23:09:04,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:04,263 INFO L225 Difference]: With dead ends: 103 [2024-12-01 23:09:04,263 INFO L226 Difference]: Without dead ends: 103 [2024-12-01 23:09:04,263 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:09:04,264 INFO L435 NwaCegarLoop]: 71 mSDtfsCounter, 115 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:04,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 216 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:04,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-12-01 23:09:04,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2024-12-01 23:09:04,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 81 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:04,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2024-12-01 23:09:04,268 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 38 [2024-12-01 23:09:04,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:04,268 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2024-12-01 23:09:04,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:04,269 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2024-12-01 23:09:04,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-12-01 23:09:04,269 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:04,270 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:09:04,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-01 23:09:04,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-01 23:09:04,470 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:04,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash -404695368, now seen corresponding path program 1 times [2024-12-01 23:09:04,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:04,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843350981] [2024-12-01 23:09:04,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:04,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:09:04,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:04,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843350981] [2024-12-01 23:09:04,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843350981] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:04,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:04,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:09:04,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532039277] [2024-12-01 23:09:04,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:04,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:09:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:04,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:09:04,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:04,629 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:04,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:04,819 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2024-12-01 23:09:04,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:09:04,819 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2024-12-01 23:09:04,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:04,820 INFO L225 Difference]: With dead ends: 88 [2024-12-01 23:09:04,820 INFO L226 Difference]: Without dead ends: 88 [2024-12-01 23:09:04,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:09:04,821 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 30 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:04,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 384 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:09:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-01 23:09:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-12-01 23:09:04,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 65 states have (on average 1.4461538461538461) internal successors, (94), 84 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2024-12-01 23:09:04,823 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 41 [2024-12-01 23:09:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:04,823 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2024-12-01 23:09:04,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2024-12-01 23:09:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-12-01 23:09:04,824 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:04,824 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:09:04,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-01 23:09:04,824 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:04,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:04,825 INFO L85 PathProgramCache]: Analyzing trace with hash -404695367, now seen corresponding path program 1 times [2024-12-01 23:09:04,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:04,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237185783] [2024-12-01 23:09:04,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:04,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:09:04,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:04,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237185783] [2024-12-01 23:09:04,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237185783] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:04,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069857840] [2024-12-01 23:09:04,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:04,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:04,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:04,889 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:04,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 23:09:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:05,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:09:05,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:09:05,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:05,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:09:05,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069857840] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:09:05,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:09:05,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-12-01 23:09:05,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727900711] [2024-12-01 23:09:05,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:05,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:09:05,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:05,113 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:09:05,113 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:09:05,113 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:09:05,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:05,138 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2024-12-01 23:09:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:09:05,139 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2024-12-01 23:09:05,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:05,140 INFO L225 Difference]: With dead ends: 111 [2024-12-01 23:09:05,140 INFO L226 Difference]: Without dead ends: 111 [2024-12-01 23:09:05,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:09:05,140 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 168 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:05,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 161 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:05,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-12-01 23:09:05,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2024-12-01 23:09:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 80 states have (on average 1.475) internal successors, (118), 99 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:05,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2024-12-01 23:09:05,144 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 41 [2024-12-01 23:09:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:05,144 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2024-12-01 23:09:05,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:09:05,145 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2024-12-01 23:09:05,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-01 23:09:05,145 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:05,145 INFO L218 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2024-12-01 23:09:05,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-01 23:09:05,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-01 23:09:05,346 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:05,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:05,346 INFO L85 PathProgramCache]: Analyzing trace with hash 2119713601, now seen corresponding path program 1 times [2024-12-01 23:09:05,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:05,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382434511] [2024-12-01 23:09:05,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:05,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:05,492 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:09:05,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:05,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382434511] [2024-12-01 23:09:05,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382434511] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:05,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131239076] [2024-12-01 23:09:05,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:05,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:05,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:05,495 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:05,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 23:09:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:05,636 INFO L256 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-01 23:09:05,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:09:05,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:09:05,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131239076] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:09:05,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:09:05,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 8 [2024-12-01 23:09:05,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222738655] [2024-12-01 23:09:05,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:05,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-01 23:09:05,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:05,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-01 23:09:05,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:09:05,727 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:09:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:05,798 INFO L93 Difference]: Finished difference Result 102 states and 114 transitions. [2024-12-01 23:09:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:09:05,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2024-12-01 23:09:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:05,799 INFO L225 Difference]: With dead ends: 102 [2024-12-01 23:09:05,800 INFO L226 Difference]: Without dead ends: 102 [2024-12-01 23:09:05,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 80 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:05,800 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 91 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:05,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 408 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:05,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-12-01 23:09:05,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2024-12-01 23:09:05,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 75 states have (on average 1.4266666666666667) internal successors, (107), 90 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:05,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 111 transitions. [2024-12-01 23:09:05,804 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 111 transitions. Word has length 42 [2024-12-01 23:09:05,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:05,804 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 111 transitions. [2024-12-01 23:09:05,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:09:05,805 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 111 transitions. [2024-12-01 23:09:05,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-01 23:09:05,805 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:05,805 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:05,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-01 23:09:06,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-01 23:09:06,006 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:06,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:06,006 INFO L85 PathProgramCache]: Analyzing trace with hash -533419319, now seen corresponding path program 2 times [2024-12-01 23:09:06,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:06,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535796827] [2024-12-01 23:09:06,007 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 23:09:06,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:06,023 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-01 23:09:06,023 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:09:06,067 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-01 23:09:06,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:06,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535796827] [2024-12-01 23:09:06,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535796827] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:06,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:06,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:09:06,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070406770] [2024-12-01 23:09:06,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:06,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:09:06,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:06,069 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:09:06,069 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:09:06,069 INFO L87 Difference]: Start difference. First operand 94 states and 111 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:06,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:06,110 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2024-12-01 23:09:06,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:09:06,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2024-12-01 23:09:06,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:06,111 INFO L225 Difference]: With dead ends: 101 [2024-12-01 23:09:06,111 INFO L226 Difference]: Without dead ends: 101 [2024-12-01 23:09:06,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-01 23:09:06,112 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 97 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:06,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 200 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:06,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-01 23:09:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2024-12-01 23:09:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 89 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:06,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 108 transitions. [2024-12-01 23:09:06,115 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 108 transitions. Word has length 46 [2024-12-01 23:09:06,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:06,115 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 108 transitions. [2024-12-01 23:09:06,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:06,115 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 108 transitions. [2024-12-01 23:09:06,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-01 23:09:06,116 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:06,116 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:06,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-01 23:09:06,116 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:06,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:06,116 INFO L85 PathProgramCache]: Analyzing trace with hash -533419388, now seen corresponding path program 1 times [2024-12-01 23:09:06,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:06,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317472522] [2024-12-01 23:09:06,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:06,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:06,388 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:09:06,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:06,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317472522] [2024-12-01 23:09:06,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317472522] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:06,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:06,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:09:06,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804443350] [2024-12-01 23:09:06,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:06,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:09:06,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:06,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:09:06,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:06,390 INFO L87 Difference]: Start difference. First operand 93 states and 108 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:06,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:06,542 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2024-12-01 23:09:06,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:09:06,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2024-12-01 23:09:06,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:06,543 INFO L225 Difference]: With dead ends: 93 [2024-12-01 23:09:06,543 INFO L226 Difference]: Without dead ends: 93 [2024-12-01 23:09:06,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:09:06,543 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 21 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:06,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 432 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:06,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-12-01 23:09:06,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-12-01 23:09:06,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 74 states have (on average 1.364864864864865) internal successors, (101), 89 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:06,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2024-12-01 23:09:06,547 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 46 [2024-12-01 23:09:06,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:06,547 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2024-12-01 23:09:06,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:06,547 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2024-12-01 23:09:06,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-01 23:09:06,547 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:06,548 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:06,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-01 23:09:06,548 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:06,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:06,548 INFO L85 PathProgramCache]: Analyzing trace with hash 282032958, now seen corresponding path program 1 times [2024-12-01 23:09:06,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:06,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570694297] [2024-12-01 23:09:06,548 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:06,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:07,436 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:07,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570694297] [2024-12-01 23:09:07,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570694297] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:07,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292920103] [2024-12-01 23:09:07,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:07,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:07,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:07,439 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:07,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-01 23:09:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:07,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-12-01 23:09:07,601 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:07,604 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 [2024-12-01 23:09:07,687 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:09:07,687 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 [2024-12-01 23:09:07,751 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 [2024-12-01 23:09:07,821 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:07,821 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 [2024-12-01 23:09:08,047 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:08,047 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 [2024-12-01 23:09:08,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:08,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 17 [2024-12-01 23:09:08,172 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 [2024-12-01 23:09:08,176 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:09:08,176 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:08,200 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1197 (Array Int Int))) (or (not (= v_ArrVal_1197 (let ((.cse0 (+ |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| 4))) (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 (select v_ArrVal_1197 .cse0))))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1197) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) 1))) is different from false [2024-12-01 23:09:08,447 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1196 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_1196) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) 1)) is different from false [2024-12-01 23:09:08,454 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1196 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_1196) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)) 1)) is different from false [2024-12-01 23:09:08,535 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-12-01 23:09:08,535 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 29 treesize of output 28 [2024-12-01 23:09:08,539 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1196 (Array Int Int)) (v_ArrVal_1195 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1195))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1196)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_ULTIMATE.start_sll_circular_create_~last~0#1.base|)) is different from false [2024-12-01 23:09:08,547 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1196 (Array Int Int)) (v_ArrVal_1195 (Array Int Int))) (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1195))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1196)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) is different from false [2024-12-01 23:09:08,553 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:08,553 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 36 treesize of output 29 [2024-12-01 23:09:08,556 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 236 treesize of output 200 [2024-12-01 23:09:08,562 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 155 treesize of output 143 [2024-12-01 23:09:08,566 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 143 treesize of output 135 [2024-12-01 23:09:08,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292920103] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:08,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:09:08,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 38 [2024-12-01 23:09:08,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530653223] [2024-12-01 23:09:08,657 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:08,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-01 23:09:08,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:08,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-01 23:09:08,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1704, Unknown=72, NotChecked=440, Total=2352 [2024-12-01 23:09:08,659 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand has 39 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 35 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:09:09,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:09,209 INFO L93 Difference]: Finished difference Result 101 states and 119 transitions. [2024-12-01 23:09:09,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-01 23:09:09,210 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 35 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2024-12-01 23:09:09,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:09,210 INFO L225 Difference]: With dead ends: 101 [2024-12-01 23:09:09,210 INFO L226 Difference]: Without dead ends: 101 [2024-12-01 23:09:09,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 54 SyntacticMatches, 2 SemanticMatches, 55 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=197, Invalid=2401, Unknown=74, NotChecked=520, Total=3192 [2024-12-01 23:09:09,212 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 126 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 942 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:09,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1211 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 942 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 23:09:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-01 23:09:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-12-01 23:09:09,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 82 states have (on average 1.4024390243902438) internal successors, (115), 97 states have internal predecessors, (115), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:09,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2024-12-01 23:09:09,216 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 49 [2024-12-01 23:09:09,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:09,216 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2024-12-01 23:09:09,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 2.0526315789473686) internal successors, (78), 35 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:09:09,216 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2024-12-01 23:09:09,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-01 23:09:09,217 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:09,217 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:09,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-01 23:09:09,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:09,417 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:09,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:09,418 INFO L85 PathProgramCache]: Analyzing trace with hash 282032959, now seen corresponding path program 1 times [2024-12-01 23:09:09,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:09,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917086037] [2024-12-01 23:09:09,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:09,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:09,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:10,545 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:10,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:10,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917086037] [2024-12-01 23:09:10,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917086037] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:10,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403901004] [2024-12-01 23:09:10,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:10,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:10,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:10,548 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:10,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 23:09:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:10,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 95 conjuncts are in the unsatisfiable core [2024-12-01 23:09:10,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:10,728 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 [2024-12-01 23:09:10,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-12-01 23:09:10,882 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:09:10,882 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 [2024-12-01 23:09:10,887 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 [2024-12-01 23:09:10,953 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 [2024-12-01 23:09:10,958 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 [2024-12-01 23:09:11,039 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:11,040 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2024-12-01 23:09:11,045 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 [2024-12-01 23:09:11,293 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:11,294 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 50 treesize of output 45 [2024-12-01 23:09:11,297 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 [2024-12-01 23:09:11,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:11,390 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 37 treesize of output 17 [2024-12-01 23:09:11,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:11,397 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 11 [2024-12-01 23:09:11,473 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 [2024-12-01 23:09:11,477 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 [2024-12-01 23:09:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-01 23:09:11,484 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:11,706 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|)) (.cse1 (+ |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| 4))) (and (forall ((v_ArrVal_1313 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_1313 .cse1)) v_ArrVal_1313)) (< 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1313) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) 5)))) (forall ((v_ArrVal_1312 (Array Int Int))) (or (forall ((v_ArrVal_1313 (Array Int Int))) (or (not (= (store .cse0 .cse1 (select v_ArrVal_1313 .cse1)) v_ArrVal_1313)) (< (+ 7 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1313) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1312) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) (not (= v_ArrVal_1312 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse1 (select v_ArrVal_1312 .cse1)))))))) is different from false [2024-12-01 23:09:11,966 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1311 (Array Int Int)) (v_ArrVal_1310 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1310) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1311) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_1310 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1310) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) 4)))) is different from false [2024-12-01 23:09:11,983 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|))) (and (forall ((v_ArrVal_1310 (Array Int Int))) (<= 0 (+ 4 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1310) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_1311 (Array Int Int)) (v_ArrVal_1310 (Array Int Int))) (<= (+ 8 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1310) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1311) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))) is different from false [2024-12-01 23:09:11,999 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (and (forall ((v_ArrVal_1311 (Array Int Int)) (v_ArrVal_1310 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1310) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1311) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_1310 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1310) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) 4))))) is different from false [2024-12-01 23:09:12,108 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_1311 (Array Int Int)) (v_ArrVal_1310 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1310) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) 8) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1311) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((v_ArrVal_1310 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1310) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) 4))))) is different from false [2024-12-01 23:09:12,118 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1311 (Array Int Int)) (v_ArrVal_1310 (Array Int Int)) (v_ArrVal_1309 (Array Int Int)) (v_ArrVal_1308 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1309))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1308) .cse0 v_ArrVal_1310) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) 8) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1311) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))))) (forall ((v_ArrVal_1310 (Array Int Int)) (v_ArrVal_1309 (Array Int Int)) (v_ArrVal_1308 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1308) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1309) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1310) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) 4)))) is different from false [2024-12-01 23:09:12,137 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1311 (Array Int Int)) (v_ArrVal_1310 (Array Int Int)) (v_ArrVal_1309 (Array Int Int)) (v_ArrVal_1308 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1309))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (<= (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1308) .cse0 v_ArrVal_1310) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) 8) (select |c_#length| (select (select (store .cse1 .cse0 v_ArrVal_1311) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))))) (forall ((v_ArrVal_1310 (Array Int Int)) (v_ArrVal_1309 (Array Int Int)) (v_ArrVal_1308 (Array Int Int))) (<= 0 (+ (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1308) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1309) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1310) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) 4)))) is different from false [2024-12-01 23:09:12,147 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:12,147 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 38 treesize of output 39 [2024-12-01 23:09:12,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:12,152 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 30 treesize of output 31 [2024-12-01 23:09:12,157 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 54 treesize of output 46 [2024-12-01 23:09:12,161 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 290 treesize of output 270 [2024-12-01 23:09:12,167 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 60 treesize of output 56 [2024-12-01 23:09:12,171 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 30 treesize of output 26 [2024-12-01 23:09:12,175 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 26 treesize of output 24 [2024-12-01 23:09:12,192 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:12,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 74 [2024-12-01 23:09:12,199 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:12,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 50 [2024-12-01 23:09:12,202 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:12,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 74 treesize of output 50 [2024-12-01 23:09:12,208 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:12,208 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:12,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 12 [2024-12-01 23:09:12,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403901004] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:12,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:09:12,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 39 [2024-12-01 23:09:12,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619975078] [2024-12-01 23:09:12,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:12,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-01 23:09:12,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:12,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-01 23:09:12,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2167, Unknown=43, NotChecked=700, Total=3080 [2024-12-01 23:09:12,429 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 40 states, 39 states have (on average 2.0) internal successors, (78), 36 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:09:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:13,296 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2024-12-01 23:09:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-01 23:09:13,296 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.0) internal successors, (78), 36 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2024-12-01 23:09:13,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:13,297 INFO L225 Difference]: With dead ends: 101 [2024-12-01 23:09:13,297 INFO L226 Difference]: Without dead ends: 101 [2024-12-01 23:09:13,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=239, Invalid=2938, Unknown=43, NotChecked=812, Total=4032 [2024-12-01 23:09:13,300 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 92 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:13,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 1377 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-01 23:09:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-12-01 23:09:13,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2024-12-01 23:09:13,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 96 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2024-12-01 23:09:13,303 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 49 [2024-12-01 23:09:13,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:13,304 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2024-12-01 23:09:13,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.0) internal successors, (78), 36 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:09:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2024-12-01 23:09:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-01 23:09:13,304 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:13,304 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:13,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-01 23:09:13,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:13,506 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:13,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:13,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1085820680, now seen corresponding path program 2 times [2024-12-01 23:09:13,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:13,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416092922] [2024-12-01 23:09:13,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 23:09:13,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:13,575 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 23:09:13,575 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:09:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-01 23:09:13,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:13,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416092922] [2024-12-01 23:09:13,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416092922] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:13,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:13,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 23:09:13,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265598373] [2024-12-01 23:09:13,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:13,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:09:13,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:13,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:09:13,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:09:13,654 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:13,703 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2024-12-01 23:09:13,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:09:13,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2024-12-01 23:09:13,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:13,704 INFO L225 Difference]: With dead ends: 99 [2024-12-01 23:09:13,704 INFO L226 Difference]: Without dead ends: 99 [2024-12-01 23:09:13,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:09:13,705 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 80 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:13,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 268 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:13,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-12-01 23:09:13,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2024-12-01 23:09:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 76 states have (on average 1.3026315789473684) internal successors, (99), 91 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:13,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2024-12-01 23:09:13,708 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 52 [2024-12-01 23:09:13,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:13,708 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2024-12-01 23:09:13,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:13,708 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2024-12-01 23:09:13,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-01 23:09:13,709 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:13,709 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:13,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-01 23:09:13,709 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:13,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash -687897713, now seen corresponding path program 1 times [2024-12-01 23:09:13,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:13,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56251216] [2024-12-01 23:09:13,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:13,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:15,633 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:09:15,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56251216] [2024-12-01 23:09:15,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56251216] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:15,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146732561] [2024-12-01 23:09:15,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:15,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:15,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:15,635 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:15,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-01 23:09:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:15,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 106 conjuncts are in the unsatisfiable core [2024-12-01 23:09:15,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:15,830 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 [2024-12-01 23:09:16,030 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:09:16,031 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 [2024-12-01 23:09:16,104 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 [2024-12-01 23:09:16,211 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:16,211 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 25 treesize of output 26 [2024-12-01 23:09:16,527 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:16,527 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 66 treesize of output 59 [2024-12-01 23:09:16,531 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 25 treesize of output 17 [2024-12-01 23:09:16,533 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 34 treesize of output 21 [2024-12-01 23:09:16,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:16,684 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 45 treesize of output 25 [2024-12-01 23:09:16,689 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 26 treesize of output 21 [2024-12-01 23:09:16,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:16,693 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 37 treesize of output 21 [2024-12-01 23:09:16,857 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 33 treesize of output 21 [2024-12-01 23:09:16,861 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 21 treesize of output 13 [2024-12-01 23:09:17,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-01 23:09:17,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:17,273 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1482 (Array Int Int)) (v_ArrVal_1481 (Array Int Int)) (v_ArrVal_1480 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| 4))) (or (not (= (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 (select v_ArrVal_1480 .cse0)) v_ArrVal_1480)) (not (= (store (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 (select v_ArrVal_1481 .cse0)) v_ArrVal_1481)) (= (+ (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1482) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1480) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (+ (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1481) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) 4)) 1) (* |c_ULTIMATE.start_main_~len~0#1| 2))))) is different from false [2024-12-01 23:09:17,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:17,497 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 40 treesize of output 41 [2024-12-01 23:09:17,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:17,504 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 79 treesize of output 78 [2024-12-01 23:09:17,508 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 29 treesize of output 18 [2024-12-01 23:09:17,779 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:17,780 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 38 treesize of output 37 [2024-12-01 23:09:17,783 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 13 treesize of output 11 [2024-12-01 23:09:18,229 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:18,230 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 19 treesize of output 20 [2024-12-01 23:09:18,232 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 33 treesize of output 25 [2024-12-01 23:09:18,235 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 6 treesize of output 4 [2024-12-01 23:09:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2024-12-01 23:09:18,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146732561] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:09:18,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:09:18,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 29, 30] total 82 [2024-12-01 23:09:18,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64975744] [2024-12-01 23:09:18,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:18,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2024-12-01 23:09:18,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:18,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2024-12-01 23:09:18,618 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=6141, Unknown=48, NotChecked=158, Total=6642 [2024-12-01 23:09:18,619 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 82 states, 80 states have (on average 1.7) internal successors, (136), 74 states have internal predecessors, (136), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-01 23:09:20,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:20,700 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2024-12-01 23:09:20,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-01 23:09:20,701 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 80 states have (on average 1.7) internal successors, (136), 74 states have internal predecessors, (136), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 55 [2024-12-01 23:09:20,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:20,701 INFO L225 Difference]: With dead ends: 95 [2024-12-01 23:09:20,701 INFO L226 Difference]: Without dead ends: 95 [2024-12-01 23:09:20,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2600 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=512, Invalid=8950, Unknown=48, NotChecked=192, Total=9702 [2024-12-01 23:09:20,704 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 159 mSDsluCounter, 2143 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 2194 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:20,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 2194 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 2223 Invalid, 0 Unknown, 87 Unchecked, 1.2s Time] [2024-12-01 23:09:20,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-12-01 23:09:20,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-12-01 23:09:20,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 76 states have (on average 1.2894736842105263) internal successors, (98), 91 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:20,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2024-12-01 23:09:20,707 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 55 [2024-12-01 23:09:20,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:20,708 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2024-12-01 23:09:20,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 80 states have (on average 1.7) internal successors, (136), 74 states have internal predecessors, (136), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-12-01 23:09:20,708 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2024-12-01 23:09:20,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-01 23:09:20,708 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:20,708 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:20,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-01 23:09:20,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:20,909 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:20,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:20,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1036014724, now seen corresponding path program 1 times [2024-12-01 23:09:20,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:20,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929166888] [2024-12-01 23:09:20,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:20,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-01 23:09:21,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:21,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929166888] [2024-12-01 23:09:21,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929166888] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:21,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711670867] [2024-12-01 23:09:21,624 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:21,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:21,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:21,627 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:21,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-01 23:09:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:21,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-01 23:09:21,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:21,922 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 17 treesize of output 13 [2024-12-01 23:09:22,081 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 12 [2024-12-01 23:09:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:09:22,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:22,264 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 32 [2024-12-01 23:09:22,302 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:09:22,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711670867] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:09:22,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:09:22,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 12, 12] total 35 [2024-12-01 23:09:22,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652199981] [2024-12-01 23:09:22,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:22,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-12-01 23:09:22,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:22,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-12-01 23:09:22,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1098, Unknown=0, NotChecked=0, Total=1190 [2024-12-01 23:09:22,304 INFO L87 Difference]: Start difference. First operand 95 states and 102 transitions. Second operand has 35 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 34 states have internal predecessors, (116), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:09:22,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:22,984 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2024-12-01 23:09:22,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-01 23:09:22,984 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 34 states have internal predecessors, (116), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2024-12-01 23:09:22,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:22,985 INFO L225 Difference]: With dead ends: 102 [2024-12-01 23:09:22,985 INFO L226 Difference]: Without dead ends: 102 [2024-12-01 23:09:22,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=262, Invalid=1994, Unknown=0, NotChecked=0, Total=2256 [2024-12-01 23:09:22,986 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 190 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:22,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1386 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:09:22,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-12-01 23:09:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2024-12-01 23:09:22,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 80 states have (on average 1.275) internal successors, (102), 95 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 106 transitions. [2024-12-01 23:09:22,988 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 106 transitions. Word has length 62 [2024-12-01 23:09:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:22,988 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 106 transitions. [2024-12-01 23:09:22,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 3.3142857142857145) internal successors, (116), 34 states have internal predecessors, (116), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:09:22,988 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 106 transitions. [2024-12-01 23:09:22,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-01 23:09:22,989 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:22,989 INFO L218 NwaCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:22,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-01 23:09:23,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-01 23:09:23,190 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:23,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:23,190 INFO L85 PathProgramCache]: Analyzing trace with hash -287883277, now seen corresponding path program 1 times [2024-12-01 23:09:23,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:23,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211420182] [2024-12-01 23:09:23,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:23,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:23,273 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 3 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-01 23:09:23,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:23,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211420182] [2024-12-01 23:09:23,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211420182] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:23,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182067304] [2024-12-01 23:09:23,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:23,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:23,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:23,276 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:23,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-01 23:09:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:23,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-01 23:09:23,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:23,473 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:09:23,474 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:09:23,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182067304] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:09:23,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:09:23,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2024-12-01 23:09:23,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281937698] [2024-12-01 23:09:23,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:23,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:09:23,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:23,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:09:23,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:09:23,543 INFO L87 Difference]: Start difference. First operand 99 states and 106 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:09:23,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:23,611 INFO L93 Difference]: Finished difference Result 79 states and 83 transitions. [2024-12-01 23:09:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:09:23,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2024-12-01 23:09:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:23,612 INFO L225 Difference]: With dead ends: 79 [2024-12-01 23:09:23,612 INFO L226 Difference]: Without dead ends: 79 [2024-12-01 23:09:23,612 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:23,613 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:23,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 230 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:09:23,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-12-01 23:09:23,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-12-01 23:09:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 75 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:23,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2024-12-01 23:09:23,619 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 62 [2024-12-01 23:09:23,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:23,619 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2024-12-01 23:09:23,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:09:23,620 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2024-12-01 23:09:23,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-01 23:09:23,620 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:23,621 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:23,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-12-01 23:09:23,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-01 23:09:23,821 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:23,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:23,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2051282419, now seen corresponding path program 1 times [2024-12-01 23:09:23,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:23,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049868979] [2024-12-01 23:09:23,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:23,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-01 23:09:23,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:23,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049868979] [2024-12-01 23:09:23,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049868979] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:23,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:23,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:09:23,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700169761] [2024-12-01 23:09:23,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:23,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:09:23,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:23,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:09:23,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:23,969 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:24,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:24,099 INFO L93 Difference]: Finished difference Result 93 states and 99 transitions. [2024-12-01 23:09:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:09:24,099 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2024-12-01 23:09:24,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:24,100 INFO L225 Difference]: With dead ends: 93 [2024-12-01 23:09:24,100 INFO L226 Difference]: Without dead ends: 93 [2024-12-01 23:09:24,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:24,100 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 17 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:24,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 266 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:24,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-12-01 23:09:24,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82. [2024-12-01 23:09:24,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 69 states have (on average 1.2318840579710144) internal successors, (85), 78 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2024-12-01 23:09:24,102 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 63 [2024-12-01 23:09:24,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:24,102 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2024-12-01 23:09:24,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 9 states have internal predecessors, (45), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:24,102 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2024-12-01 23:09:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-01 23:09:24,103 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:24,103 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:24,103 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-12-01 23:09:24,103 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:24,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:24,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2051282420, now seen corresponding path program 1 times [2024-12-01 23:09:24,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:24,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368756703] [2024-12-01 23:09:24,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:24,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:24,289 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:09:24,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:24,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368756703] [2024-12-01 23:09:24,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368756703] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:24,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:24,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:09:24,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128884568] [2024-12-01 23:09:24,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:24,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:09:24,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:24,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:09:24,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:24,291 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:24,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:24,407 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2024-12-01 23:09:24,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:09:24,407 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2024-12-01 23:09:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:24,408 INFO L225 Difference]: With dead ends: 80 [2024-12-01 23:09:24,408 INFO L226 Difference]: Without dead ends: 80 [2024-12-01 23:09:24,408 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:24,408 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:24,408 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 300 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:24,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-01 23:09:24,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-01 23:09:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 76 states have internal predecessors, (82), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2024-12-01 23:09:24,411 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 63 [2024-12-01 23:09:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:24,411 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2024-12-01 23:09:24,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:24,411 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2024-12-01 23:09:24,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 23:09:24,412 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:24,412 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:24,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-12-01 23:09:24,412 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:24,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash -834720567, now seen corresponding path program 1 times [2024-12-01 23:09:24,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:24,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339870424] [2024-12-01 23:09:24,412 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:24,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:09:24,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:24,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339870424] [2024-12-01 23:09:24,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339870424] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:24,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:24,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-01 23:09:24,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734537589] [2024-12-01 23:09:24,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:24,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:09:24,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:24,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:09:24,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:24,511 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:24,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:24,585 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2024-12-01 23:09:24,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:09:24,586 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2024-12-01 23:09:24,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:24,586 INFO L225 Difference]: With dead ends: 80 [2024-12-01 23:09:24,586 INFO L226 Difference]: Without dead ends: 80 [2024-12-01 23:09:24,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:24,587 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 17 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:24,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 354 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:24,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-01 23:09:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-01 23:09:24,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.173913043478261) internal successors, (81), 76 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:24,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2024-12-01 23:09:24,589 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 64 [2024-12-01 23:09:24,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:24,589 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2024-12-01 23:09:24,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:24,589 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2024-12-01 23:09:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-01 23:09:24,589 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:24,590 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:24,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-12-01 23:09:24,590 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:24,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:24,590 INFO L85 PathProgramCache]: Analyzing trace with hash 959937570, now seen corresponding path program 1 times [2024-12-01 23:09:24,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:24,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593412248] [2024-12-01 23:09:24,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:24,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:09:24,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:24,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593412248] [2024-12-01 23:09:24,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593412248] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:24,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181237062] [2024-12-01 23:09:24,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:24,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:24,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:24,723 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:24,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-01 23:09:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:24,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-12-01 23:09:24,918 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:24,920 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 [2024-12-01 23:09:25,003 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:09:25,003 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 [2024-12-01 23:09:25,042 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 [2024-12-01 23:09:25,095 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:25,095 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 [2024-12-01 23:09:25,277 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:25,277 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 [2024-12-01 23:09:25,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:25,329 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 37 treesize of output 17 [2024-12-01 23:09:25,427 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 [2024-12-01 23:09:25,432 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 23:09:25,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:25,467 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1958 (Array Int Int))) (or (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1958) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) 1) (not (= v_ArrVal_1958 (let ((.cse0 (+ |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| 4))) (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 (select v_ArrVal_1958 .cse0))))))) is different from false [2024-12-01 23:09:25,544 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1957 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1957) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) 1)) is different from false [2024-12-01 23:09:25,549 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1957 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_1957) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) 1)) is different from false [2024-12-01 23:09:25,613 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1957 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_1957) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)) 1)) is different from false [2024-12-01 23:09:25,618 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1957 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1957) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) 1)) is different from false [2024-12-01 23:09:25,625 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-12-01 23:09:25,626 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 29 treesize of output 28 [2024-12-01 23:09:25,696 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1956 (Array Int Int)) (v_ArrVal_1957 (Array Int Int))) (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1956))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1957)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) is different from false [2024-12-01 23:09:25,701 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:25,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 29 [2024-12-01 23:09:25,703 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 236 treesize of output 200 [2024-12-01 23:09:25,707 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 155 treesize of output 147 [2024-12-01 23:09:25,711 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 147 treesize of output 135 [2024-12-01 23:09:25,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181237062] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:25,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:09:25,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 22] total 27 [2024-12-01 23:09:25,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097024371] [2024-12-01 23:09:25,808 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:25,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-01 23:09:25,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:25,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-01 23:09:25,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=876, Unknown=48, NotChecked=390, Total=1406 [2024-12-01 23:09:25,809 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 28 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 25 states have internal predecessors, (96), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:09:26,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:26,317 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2024-12-01 23:09:26,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-01 23:09:26,317 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 25 states have internal predecessors, (96), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2024-12-01 23:09:26,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:26,318 INFO L225 Difference]: With dead ends: 87 [2024-12-01 23:09:26,318 INFO L226 Difference]: Without dead ends: 87 [2024-12-01 23:09:26,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 82 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=128, Invalid=1329, Unknown=49, NotChecked=474, Total=1980 [2024-12-01 23:09:26,318 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:26,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 645 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:09:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-12-01 23:09:26,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2024-12-01 23:09:26,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 76 states have internal predecessors, (82), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:26,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2024-12-01 23:09:26,321 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 66 [2024-12-01 23:09:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:26,321 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2024-12-01 23:09:26,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.5555555555555554) internal successors, (96), 25 states have internal predecessors, (96), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:09:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2024-12-01 23:09:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-01 23:09:26,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:26,322 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:26,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-01 23:09:26,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:26,522 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:26,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:26,523 INFO L85 PathProgramCache]: Analyzing trace with hash 959937571, now seen corresponding path program 1 times [2024-12-01 23:09:26,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:26,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658142483] [2024-12-01 23:09:26,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:26,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-01 23:09:27,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:27,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658142483] [2024-12-01 23:09:27,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658142483] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:27,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191156934] [2024-12-01 23:09:27,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:27,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:27,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:27,483 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:27,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-01 23:09:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:27,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 109 conjuncts are in the unsatisfiable core [2024-12-01 23:09:27,678 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:27,681 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 [2024-12-01 23:09:27,771 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:09:27,771 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 [2024-12-01 23:09:27,856 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 [2024-12-01 23:09:27,860 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 [2024-12-01 23:09:27,956 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:27,956 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 50 treesize of output 45 [2024-12-01 23:09:27,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2024-12-01 23:09:28,274 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:28,275 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 50 treesize of output 45 [2024-12-01 23:09:28,281 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 [2024-12-01 23:09:28,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:28,366 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 11 [2024-12-01 23:09:28,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:28,371 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 37 treesize of output 17 [2024-12-01 23:09:28,582 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 [2024-12-01 23:09:28,586 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 [2024-12-01 23:09:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 23:09:28,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:29,642 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:29,642 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 70 treesize of output 74 [2024-12-01 23:09:29,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:29,903 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 36 treesize of output 29 [2024-12-01 23:09:29,905 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 136 treesize of output 112 [2024-12-01 23:09:29,910 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 28 treesize of output 22 [2024-12-01 23:09:29,912 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 46 treesize of output 42 [2024-12-01 23:09:29,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:29,926 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 38 treesize of output 39 [2024-12-01 23:09:29,932 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:29,932 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 30 treesize of output 31 [2024-12-01 23:09:29,934 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:29,936 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 28 treesize of output 20 [2024-12-01 23:09:29,939 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:29,939 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:29,941 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 18 treesize of output 10 [2024-12-01 23:09:29,948 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:29,948 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 36 treesize of output 37 [2024-12-01 23:09:29,954 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:29,954 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 30 treesize of output 31 [2024-12-01 23:09:29,956 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:29,958 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 28 treesize of output 20 [2024-12-01 23:09:29,960 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:29,961 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:09:29,963 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 18 treesize of output 10 [2024-12-01 23:09:30,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191156934] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:30,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:09:30,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 22] total 42 [2024-12-01 23:09:30,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867264970] [2024-12-01 23:09:30,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:30,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-01 23:09:30,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:30,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-01 23:09:30,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=3209, Unknown=11, NotChecked=0, Total=3422 [2024-12-01 23:09:30,193 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 43 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 39 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:09:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:30,892 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2024-12-01 23:09:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-01 23:09:30,893 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 39 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 66 [2024-12-01 23:09:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:30,893 INFO L225 Difference]: With dead ends: 82 [2024-12-01 23:09:30,893 INFO L226 Difference]: Without dead ends: 82 [2024-12-01 23:09:30,894 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 955 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=255, Invalid=4024, Unknown=11, NotChecked=0, Total=4290 [2024-12-01 23:09:30,894 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 41 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:30,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 879 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-01 23:09:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-12-01 23:09:30,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-12-01 23:09:30,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 78 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2024-12-01 23:09:30,897 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 66 [2024-12-01 23:09:30,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:30,897 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2024-12-01 23:09:30,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.3333333333333335) internal successors, (98), 39 states have internal predecessors, (98), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:09:30,897 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2024-12-01 23:09:30,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-01 23:09:30,898 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:30,898 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:30,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-01 23:09:31,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:31,098 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:31,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:31,099 INFO L85 PathProgramCache]: Analyzing trace with hash -306703941, now seen corresponding path program 1 times [2024-12-01 23:09:31,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:31,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972126046] [2024-12-01 23:09:31,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:31,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:31,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:09:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:31,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972126046] [2024-12-01 23:09:31,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972126046] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:09:31,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:09:31,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:09:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117848663] [2024-12-01 23:09:31,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:09:31,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:09:31,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:31,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:09:31,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:31,226 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:31,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:31,331 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2024-12-01 23:09:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:09:31,331 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2024-12-01 23:09:31,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:31,332 INFO L225 Difference]: With dead ends: 81 [2024-12-01 23:09:31,332 INFO L226 Difference]: Without dead ends: 81 [2024-12-01 23:09:31,332 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:09:31,332 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 11 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:31,333 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 300 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:09:31,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-12-01 23:09:31,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-12-01 23:09:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 72 states have (on average 1.125) internal successors, (81), 77 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2024-12-01 23:09:31,336 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 67 [2024-12-01 23:09:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:31,336 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2024-12-01 23:09:31,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.666666666666667) internal successors, (51), 9 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:09:31,337 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2024-12-01 23:09:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-01 23:09:31,337 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:31,337 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:31,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-12-01 23:09:31,337 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:31,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1607984508, now seen corresponding path program 1 times [2024-12-01 23:09:31,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:31,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073594563] [2024-12-01 23:09:31,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:31,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:32,054 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:09:32,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:32,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073594563] [2024-12-01 23:09:32,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073594563] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:32,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080922632] [2024-12-01 23:09:32,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:32,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:32,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:32,056 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:32,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-01 23:09:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:32,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-12-01 23:09:32,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:32,266 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 [2024-12-01 23:09:32,305 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 [2024-12-01 23:09:32,380 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:09:32,380 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 [2024-12-01 23:09:32,454 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 [2024-12-01 23:09:32,544 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:32,544 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 [2024-12-01 23:09:32,816 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:32,816 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 [2024-12-01 23:09:32,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:32,897 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 37 treesize of output 17 [2024-12-01 23:09:33,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-12-01 23:09:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-12-01 23:09:33,091 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:33,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:33,877 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 36 treesize of output 29 [2024-12-01 23:09:33,880 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 136 treesize of output 112 [2024-12-01 23:09:33,886 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 32 treesize of output 26 [2024-12-01 23:09:33,889 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 54 treesize of output 50 [2024-12-01 23:09:34,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080922632] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:34,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:09:34,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 40 [2024-12-01 23:09:34,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630429169] [2024-12-01 23:09:34,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:34,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-12-01 23:09:34,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:34,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-12-01 23:09:34,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2873, Unknown=11, NotChecked=0, Total=3080 [2024-12-01 23:09:34,071 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand has 41 states, 40 states have (on average 2.6) internal successors, (104), 37 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:09:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:34,749 INFO L93 Difference]: Finished difference Result 82 states and 86 transitions. [2024-12-01 23:09:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-01 23:09:34,749 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.6) internal successors, (104), 37 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 69 [2024-12-01 23:09:34,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:34,750 INFO L225 Difference]: With dead ends: 82 [2024-12-01 23:09:34,750 INFO L226 Difference]: Without dead ends: 82 [2024-12-01 23:09:34,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 84 SyntacticMatches, 5 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=274, Invalid=3875, Unknown=11, NotChecked=0, Total=4160 [2024-12-01 23:09:34,751 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 61 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 966 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:34,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 757 Invalid, 970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 966 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:09:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-12-01 23:09:34,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-12-01 23:09:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 73 states have (on average 1.1232876712328768) internal successors, (82), 78 states have internal predecessors, (82), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 86 transitions. [2024-12-01 23:09:34,752 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 86 transitions. Word has length 69 [2024-12-01 23:09:34,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:34,752 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 86 transitions. [2024-12-01 23:09:34,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.6) internal successors, (104), 37 states have internal predecessors, (104), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:09:34,753 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 86 transitions. [2024-12-01 23:09:34,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-01 23:09:34,753 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:34,753 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:34,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-01 23:09:34,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:34,953 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:34,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:34,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1621499780, now seen corresponding path program 1 times [2024-12-01 23:09:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327025035] [2024-12-01 23:09:34,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:34,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 23:09:35,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:35,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327025035] [2024-12-01 23:09:35,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327025035] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:35,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355427336] [2024-12-01 23:09:35,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:35,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:35,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:35,580 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:35,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-01 23:09:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:35,778 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-12-01 23:09:35,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:35,782 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 [2024-12-01 23:09:35,816 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:09:35,817 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 [2024-12-01 23:09:35,825 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 [2024-12-01 23:09:35,870 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:35,871 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 25 treesize of output 26 [2024-12-01 23:09:35,993 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:09:35,993 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 25 treesize of output 26 [2024-12-01 23:09:36,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:36,040 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 12 [2024-12-01 23:09:36,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:36,101 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 [2024-12-01 23:09:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-12-01 23:09:36,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:09:36,296 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2344 (Array Int Int))) (or (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2344) |c_ULTIMATE.start_main_~s~0#1.base|) 0))) (not (= v_ArrVal_2344 (let ((.cse0 (+ |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| 4))) (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 (select v_ArrVal_2344 .cse0))))))) is different from false [2024-12-01 23:09:36,377 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_14 Int) (v_ArrVal_2343 (Array Int Int)) (|v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| Int)) (or (not (= (select (store (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_2343) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| 4) v_DerPreprocessor_14) 0) |c_ULTIMATE.start_main_~s~0#1.base|)) (< |v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| |c_ULTIMATE.start_main_~s~0#1.offset|))) is different from false [2024-12-01 23:09:36,390 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_14 Int) (v_ArrVal_2343 (Array Int Int)) (|v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| Int)) (or (not (= (select (store (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_2343) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| 4) v_DerPreprocessor_14) 0) |c_ULTIMATE.start_main_~s~0#1.base|)) (< |v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| |c_ULTIMATE.start_main_~s~0#1.offset|))) is different from false [2024-12-01 23:09:36,398 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_14 Int) (v_ArrVal_2343 (Array Int Int)) (|v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| Int)) (or (not (= (select (store (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_2343) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| 4) v_DerPreprocessor_14) 0) |c_ULTIMATE.start_main_~s~0#1.base|)) (< |v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| |c_ULTIMATE.start_main_~s~0#1.offset|))) is different from false [2024-12-01 23:09:36,410 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_14 Int) (v_ArrVal_2343 (Array Int Int)) (|v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| Int)) (or (not (= |c_ULTIMATE.start_main_~s~0#1.base| (select (store (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_2343) |c_ULTIMATE.start_main_~s~0#1.base|) (+ |v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| 4) v_DerPreprocessor_14) 0))) (< |v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| |c_ULTIMATE.start_main_~s~0#1.offset|))) is different from false [2024-12-01 23:09:36,703 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_14 Int) (v_ArrVal_2343 (Array Int Int)) (|v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| Int) (v_ArrVal_2342 (Array Int Int))) (or (not (= |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base| (select (store (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_2342))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_2343)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) (+ |v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| 4) v_DerPreprocessor_14) 0))) (< |v_ULTIMATE.start_sll_circular_update_at_~head#1.offset_80| |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) is different from false [2024-12-01 23:09:36,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:36,710 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 42 treesize of output 35 [2024-12-01 23:09:36,713 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 161 treesize of output 149 [2024-12-01 23:09:36,719 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 108 treesize of output 104 [2024-12-01 23:09:36,729 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:36,729 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 117 treesize of output 120 [2024-12-01 23:09:36,742 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:36,742 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 131 treesize of output 131 [2024-12-01 23:09:37,338 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 7 not checked. [2024-12-01 23:09:37,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355427336] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:09:37,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:09:37,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 26] total 55 [2024-12-01 23:09:37,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108368708] [2024-12-01 23:09:37,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:09:37,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-12-01 23:09:37,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:09:37,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-12-01 23:09:37,340 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=2160, Unknown=48, NotChecked=594, Total=2970 [2024-12-01 23:09:37,340 INFO L87 Difference]: Start difference. First operand 82 states and 86 transitions. Second operand has 55 states, 55 states have (on average 2.3454545454545452) internal successors, (129), 49 states have internal predecessors, (129), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-01 23:09:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:09:38,280 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2024-12-01 23:09:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-01 23:09:38,280 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.3454545454545452) internal successors, (129), 49 states have internal predecessors, (129), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 70 [2024-12-01 23:09:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:09:38,281 INFO L225 Difference]: With dead ends: 80 [2024-12-01 23:09:38,281 INFO L226 Difference]: Without dead ends: 80 [2024-12-01 23:09:38,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 109 SyntacticMatches, 9 SemanticMatches, 60 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=212, Invalid=2843, Unknown=49, NotChecked=678, Total=3782 [2024-12-01 23:09:38,282 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 70 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 380 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:09:38,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 972 Invalid, 1503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1118 Invalid, 0 Unknown, 380 Unchecked, 0.6s Time] [2024-12-01 23:09:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-01 23:09:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2024-12-01 23:09:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1142857142857143) internal successors, (78), 75 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:09:38,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2024-12-01 23:09:38,284 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 70 [2024-12-01 23:09:38,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:09:38,284 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2024-12-01 23:09:38,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 2.3454545454545452) internal successors, (129), 49 states have internal predecessors, (129), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-01 23:09:38,284 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2024-12-01 23:09:38,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-01 23:09:38,285 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:09:38,285 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:09:38,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-01 23:09:38,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-12-01 23:09:38,485 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:09:38,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:09:38,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1696384010, now seen corresponding path program 1 times [2024-12-01 23:09:38,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:09:38,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788133386] [2024-12-01 23:09:38,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:38,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:09:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 7 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:09:39,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:09:39,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788133386] [2024-12-01 23:09:39,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788133386] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:09:39,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295060151] [2024-12-01 23:09:39,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:09:39,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:09:39,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:09:39,817 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:09:39,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-01 23:09:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:09:40,023 INFO L256 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 124 conjuncts are in the unsatisfiable core [2024-12-01 23:09:40,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:09:40,029 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 [2024-12-01 23:09:40,138 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:09:40,138 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 [2024-12-01 23:09:40,227 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 [2024-12-01 23:09:40,233 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 [2024-12-01 23:09:40,335 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-12-01 23:09:40,335 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 47 treesize of output 33 [2024-12-01 23:09:40,338 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 22 [2024-12-01 23:09:40,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:40,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:40,715 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-12-01 23:09:40,715 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 66 [2024-12-01 23:09:40,730 INFO L349 Elim1Store]: treesize reduction 35, result has 23.9 percent of original size [2024-12-01 23:09:40,730 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 57 treesize of output 28 [2024-12-01 23:09:40,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:09:40,856 INFO L349 Elim1Store]: treesize reduction 47, result has 13.0 percent of original size [2024-12-01 23:09:40,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 32 [2024-12-01 23:09:40,862 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 0 case distinctions, treesize of input 27 treesize of output 20 [2024-12-01 23:09:40,867 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 [2024-12-01 23:09:41,370 INFO L349 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2024-12-01 23:09:41,370 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 53 treesize of output 36 [2024-12-01 23:09:41,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:09:41,378 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 15 [2024-12-01 23:09:41,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:09:41,589 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:10:47,468 INFO L349 Elim1Store]: treesize reduction 151, result has 51.0 percent of original size [2024-12-01 23:10:47,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 3080 treesize of output 2757 [2024-12-01 23:10:48,429 INFO L349 Elim1Store]: treesize reduction 148, result has 45.2 percent of original size [2024-12-01 23:10:48,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 1400 treesize of output 1469 [2024-12-01 23:10:48,835 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:10:48,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 1377 treesize of output 1445 [2024-12-01 23:10:50,246 INFO L349 Elim1Store]: treesize reduction 219, result has 51.9 percent of original size [2024-12-01 23:10:50,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 12 case distinctions, treesize of input 5636 treesize of output 5384 [2024-12-01 23:10:51,494 INFO L349 Elim1Store]: treesize reduction 162, result has 44.9 percent of original size [2024-12-01 23:10:51,495 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 1787 treesize of output 1868 [2024-12-01 23:10:51,666 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 1657 treesize of output 1637 [2024-12-01 23:10:52,463 INFO L349 Elim1Store]: treesize reduction 40, result has 73.5 percent of original size [2024-12-01 23:10:52,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 1828 treesize of output 1902 [2024-12-01 23:10:52,623 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 1629 treesize of output 1609 [2024-12-01 23:10:55,299 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 6 treesize of output 4 [2024-12-01 23:10:55,446 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 6 treesize of output 4 [2024-12-01 23:10:56,043 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 6 treesize of output 4 [2024-12-01 23:10:56,481 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 6 treesize of output 4 [2024-12-01 23:12:52,905 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 6 treesize of output 4 [2024-12-01 23:12:52,999 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 6 treesize of output 4 [2024-12-01 23:12:53,228 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 6 treesize of output 4 [2024-12-01 23:12:57,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:12:57,282 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 68 treesize of output 70 [2024-12-01 23:12:57,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-12-01 23:12:58,065 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 6 treesize of output 4 [2024-12-01 23:12:59,288 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 6 treesize of output 4 [2024-12-01 23:12:59,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:12:59,447 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 68 treesize of output 70 [2024-12-01 23:12:59,720 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 6 treesize of output 4 [2024-12-01 23:12:59,870 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 56 treesize of output 52 [2024-12-01 23:13:00,274 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 6 treesize of output 4 [2024-12-01 23:13:00,480 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-01 23:13:00,480 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 68 treesize of output 1 [2024-12-01 23:13:00,521 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-12-01 23:13:00,747 WARN L214 Elim1Store]: Array PQE input equivalent to true [2024-12-01 23:13:04,704 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:13:04,704 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 168 treesize of output 160 [2024-12-01 23:13:05,969 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-01 23:13:05,969 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 377 treesize of output 1 [2024-12-01 23:13:07,715 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 157 treesize of output 143 [2024-12-01 23:13:08,898 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 342 treesize of output 318 [2024-12-01 23:13:09,543 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 294 treesize of output 270 [2024-12-01 23:13:11,358 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 157 treesize of output 143 [2024-12-01 23:13:12,047 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 342 treesize of output 318 [2024-12-01 23:13:13,070 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 157 treesize of output 143 [2024-12-01 23:13:13,672 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 342 treesize of output 318 [2024-12-01 23:13:14,846 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 294 treesize of output 270 [2024-12-01 23:15:16,882 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 260 treesize of output 236 [2024-12-01 23:15:17,476 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 130 treesize of output 116 [2024-12-01 23:15:18,049 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 139 treesize of output 125 [2024-12-01 23:15:18,749 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 233 treesize of output 209 [2024-12-01 23:15:19,533 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 157 treesize of output 143 [2024-12-01 23:15:21,041 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 342 treesize of output 318 [2024-12-01 23:15:22,725 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 139 treesize of output 125 [2024-12-01 23:15:23,411 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 233 treesize of output 209 [2024-12-01 23:15:23,747 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 139 treesize of output 125 [2024-12-01 23:15:24,206 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 259 treesize of output 235 [2024-12-01 23:15:25,082 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:15:25,082 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 168 treesize of output 160 [2024-12-01 23:15:26,976 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-01 23:15:26,977 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 377 treesize of output 1 [2024-12-01 23:15:55,557 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-01 23:15:55,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 101 [2024-12-01 23:15:55,558 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-12-01 23:15:55,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-01 23:15:55,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:15:55,759 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_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/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:275) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:499) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:484) 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:590) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:245) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:318) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:728) 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.QuantifierPusher.pushInner(QuantifierPusher.java:274) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:194) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$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.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:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:337) 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:234) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) 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:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) 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) ... 93 more [2024-12-01 23:15:55,764 INFO L158 Benchmark]: Toolchain (without parser) took 422363.57ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 116.3MB in the beginning and 191.8MB in the end (delta: -75.5MB). Peak memory consumption was 305.8MB. Max. memory is 16.1GB. [2024-12-01 23:15:55,764 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:15:55,764 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.45ms. Allocated memory is still 142.6MB. Free memory was 116.1MB in the beginning and 98.3MB in the end (delta: 17.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 23:15:55,764 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.23ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 96.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:15:55,764 INFO L158 Benchmark]: Boogie Preprocessor took 46.93ms. Allocated memory is still 142.6MB. Free memory was 96.5MB in the beginning and 93.9MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 23:15:55,764 INFO L158 Benchmark]: RCFGBuilder took 417.58ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 73.8MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-01 23:15:55,764 INFO L158 Benchmark]: TraceAbstraction took 421492.73ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 73.2MB in the beginning and 191.8MB in the end (delta: -118.6MB). Peak memory consumption was 272.3MB. Max. memory is 16.1GB. [2024-12-01 23:15:55,765 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 142.6MB. Free memory is still 81.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.45ms. Allocated memory is still 142.6MB. Free memory was 116.1MB in the beginning and 98.3MB in the end (delta: 17.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.23ms. Allocated memory is still 142.6MB. Free memory was 98.3MB in the beginning and 96.5MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.93ms. Allocated memory is still 142.6MB. Free memory was 96.5MB in the beginning and 93.9MB in the end (delta: 2.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 417.58ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 73.8MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 421492.73ms. Allocated memory was 142.6MB in the beginning and 486.5MB in the end (delta: 343.9MB). Free memory was 73.2MB in the beginning and 191.8MB in the end (delta: -118.6MB). Peak memory consumption was 272.3MB. 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_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/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_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1 --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 4fecbd384f63aa34e01807a3a6735a322a2435f1312f0df3ed763fde7f43fe0a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:15:57,467 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:15:57,539 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-12-01 23:15:57,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:15:57,546 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:15:57,567 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:15:57,567 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:15:57,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:15:57,568 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:15:57,568 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:15:57,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:15:57,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:15:57,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:15:57,569 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:15:57,569 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:15:57,569 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:15:57,569 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 23:15:57,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:15:57,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 23:15:57,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:15:57,569 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-01 23:15:57,569 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:15:57,570 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:15:57,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:15:57,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:15:57,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:15:57,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:15:57,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:15:57,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:15:57,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:15:57,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:15:57,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:15:57,571 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-01 23:15:57,571 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-01 23:15:57,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:15:57,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:15:57,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:15:57,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:15:57,572 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1 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 -> 4fecbd384f63aa34e01807a3a6735a322a2435f1312f0df3ed763fde7f43fe0a [2024-12-01 23:15:57,792 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:15:57,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:15:57,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:15:57,804 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:15:57,804 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:15:57,806 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2024-12-01 23:16:00,605 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/data/04a652230/c527f08c14ce4c9eb6392e73fbd6b24e/FLAG19975d514 [2024-12-01 23:16:00,825 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:16:00,825 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/sv-benchmarks/c/list-simple/sll2c_update_all_reverse.i [2024-12-01 23:16:00,836 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/data/04a652230/c527f08c14ce4c9eb6392e73fbd6b24e/FLAG19975d514 [2024-12-01 23:16:00,851 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/data/04a652230/c527f08c14ce4c9eb6392e73fbd6b24e [2024-12-01 23:16:00,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:16:00,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:16:00,856 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:16:00,856 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:16:00,860 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:16:00,861 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:16:00" (1/1) ... [2024-12-01 23:16:00,862 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@669202ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:00, skipping insertion in model container [2024-12-01 23:16:00,862 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:16:00" (1/1) ... [2024-12-01 23:16:00,887 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:16:01,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:16:01,140 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:16:01,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:16:01,208 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:16:01,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01 WrapperNode [2024-12-01 23:16:01,209 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:16:01,210 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:16:01,210 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:16:01,210 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:16:01,216 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,228 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,243 INFO L138 Inliner]: procedures = 129, calls = 27, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 134 [2024-12-01 23:16:01,244 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:16:01,244 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:16:01,244 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:16:01,244 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:16:01,253 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,257 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,273 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-12-01 23:16:01,274 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,274 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,283 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,287 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,290 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,292 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:16:01,293 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:16:01,293 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:16:01,293 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:16:01,294 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (1/1) ... [2024-12-01 23:16:01,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:16:01,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:01,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:16:01,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2024-12-01 23:16:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-12-01 23:16:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-12-01 23:16:01,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-01 23:16:01,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-12-01 23:16:01,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:16:01,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:16:01,449 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:16:01,450 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:16:01,773 INFO L? ?]: Removed 93 outVars from TransFormulas that were not future-live. [2024-12-01 23:16:01,773 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:16:01,781 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:16:01,782 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-12-01 23:16:01,782 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:16:01 BoogieIcfgContainer [2024-12-01 23:16:01,782 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:16:01,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:16:01,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:16:01,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:16:01,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:16:00" (1/3) ... [2024-12-01 23:16:01,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b912586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:16:01, skipping insertion in model container [2024-12-01 23:16:01,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:16:01" (2/3) ... [2024-12-01 23:16:01,789 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b912586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:16:01, skipping insertion in model container [2024-12-01 23:16:01,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:16:01" (3/3) ... [2024-12-01 23:16:01,790 INFO L128 eAbstractionObserver]: Analyzing ICFG sll2c_update_all_reverse.i [2024-12-01 23:16:01,800 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:16:01,801 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll2c_update_all_reverse.i that has 2 procedures, 86 locations, 1 initial locations, 6 loop locations, and 28 error locations. [2024-12-01 23:16:01,829 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:16:01,839 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@59f897ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:16:01,839 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2024-12-01 23:16:01,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 86 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 82 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:01,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-01 23:16:01,847 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:01,848 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-01 23:16:01,848 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:01,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:01,852 INFO L85 PathProgramCache]: Analyzing trace with hash 894752021, now seen corresponding path program 1 times [2024-12-01 23:16:01,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:01,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204710311] [2024-12-01 23:16:01,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:01,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:01,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:01,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:01,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 23:16:01,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:01,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:16:01,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:02,008 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 [2024-12-01 23:16:02,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:02,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:02,027 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:02,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204710311] [2024-12-01 23:16:02,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204710311] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:02,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:02,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:16:02,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795297777] [2024-12-01 23:16:02,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:02,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:16:02,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:02,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:16:02,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:16:02,056 INFO L87 Difference]: Start difference. First operand has 86 states, 54 states have (on average 1.8148148148148149) internal successors, (98), 82 states have internal predecessors, (98), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:16:02,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:02,188 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2024-12-01 23:16:02,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:16:02,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-12-01 23:16:02,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:02,196 INFO L225 Difference]: With dead ends: 83 [2024-12-01 23:16:02,196 INFO L226 Difference]: Without dead ends: 80 [2024-12-01 23:16:02,198 INFO L434 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 [2024-12-01 23:16:02,200 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 2 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:02,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 143 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:16:02,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-01 23:16:02,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-01 23:16:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 51 states have (on average 1.6274509803921569) internal successors, (83), 76 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2024-12-01 23:16:02,234 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 6 [2024-12-01 23:16:02,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:02,234 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2024-12-01 23:16:02,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:16:02,235 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2024-12-01 23:16:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-01 23:16:02,235 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:02,235 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-01 23:16:02,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 23:16:02,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:02,436 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:02,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:02,436 INFO L85 PathProgramCache]: Analyzing trace with hash 894752022, now seen corresponding path program 1 times [2024-12-01 23:16:02,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:02,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615532084] [2024-12-01 23:16:02,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:02,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:02,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:02,439 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:02,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 23:16:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:02,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:16:02,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:02,511 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 [2024-12-01 23:16:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:02,533 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:02,533 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:02,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615532084] [2024-12-01 23:16:02,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615532084] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:02,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:02,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:16:02,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937360924] [2024-12-01 23:16:02,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:02,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:16:02,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:02,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:16:02,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:16:02,535 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:16:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:02,638 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2024-12-01 23:16:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:16:02,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-12-01 23:16:02,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:02,639 INFO L225 Difference]: With dead ends: 78 [2024-12-01 23:16:02,639 INFO L226 Difference]: Without dead ends: 78 [2024-12-01 23:16:02,639 INFO L434 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 [2024-12-01 23:16:02,640 INFO L435 NwaCegarLoop]: 81 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:02,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 144 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:16:02,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-12-01 23:16:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-12-01 23:16:02,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 51 states have (on average 1.588235294117647) internal successors, (81), 74 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2024-12-01 23:16:02,647 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 6 [2024-12-01 23:16:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:02,647 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2024-12-01 23:16:02,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:16:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2024-12-01 23:16:02,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-01 23:16:02,648 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:02,649 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:02,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-01 23:16:02,849 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:02,849 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:02,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:02,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1374205706, now seen corresponding path program 1 times [2024-12-01 23:16:02,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:02,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416120485] [2024-12-01 23:16:02,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:02,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:02,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:02,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:02,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 23:16:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:02,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-01 23:16:02,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:02,970 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:02,971 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:02,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416120485] [2024-12-01 23:16:02,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416120485] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:02,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:02,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:16:02,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332957879] [2024-12-01 23:16:02,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:02,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:16:02,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:02,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:16:02,973 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:16:02,973 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 23:16:03,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:03,227 INFO L93 Difference]: Finished difference Result 81 states and 91 transitions. [2024-12-01 23:16:03,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:16:03,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-12-01 23:16:03,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:03,229 INFO L225 Difference]: With dead ends: 81 [2024-12-01 23:16:03,230 INFO L226 Difference]: Without dead ends: 81 [2024-12-01 23:16:03,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:16:03,231 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 2 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:03,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 283 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:16:03,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-12-01 23:16:03,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2024-12-01 23:16:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 53 states have (on average 1.6037735849056605) internal successors, (85), 76 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:03,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2024-12-01 23:16:03,239 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 13 [2024-12-01 23:16:03,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:03,239 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2024-12-01 23:16:03,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 23:16:03,240 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2024-12-01 23:16:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-01 23:16:03,240 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:03,240 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:03,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 23:16:03,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:03,441 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:03,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:03,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1374205705, now seen corresponding path program 1 times [2024-12-01 23:16:03,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:03,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [533511137] [2024-12-01 23:16:03,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:03,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:03,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:03,444 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:03,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-01 23:16:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:03,514 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-01 23:16:03,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:03,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:03,532 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:03,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533511137] [2024-12-01 23:16:03,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533511137] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:03,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:03,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:16:03,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173122133] [2024-12-01 23:16:03,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:03,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:16:03,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:03,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:16:03,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:16:03,533 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 23:16:03,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:03,549 INFO L93 Difference]: Finished difference Result 85 states and 93 transitions. [2024-12-01 23:16:03,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:16:03,549 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-12-01 23:16:03,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:03,550 INFO L225 Difference]: With dead ends: 85 [2024-12-01 23:16:03,550 INFO L226 Difference]: Without dead ends: 85 [2024-12-01 23:16:03,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:16:03,551 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 5 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:03,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 161 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:16:03,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-12-01 23:16:03,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2024-12-01 23:16:03,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.5769230769230769) internal successors, (82), 75 states have internal predecessors, (82), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:03,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2024-12-01 23:16:03,563 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 13 [2024-12-01 23:16:03,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:03,564 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2024-12-01 23:16:03,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-12-01 23:16:03,564 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2024-12-01 23:16:03,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-01 23:16:03,564 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:03,564 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:03,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-01 23:16:03,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:03,765 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:03,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash 626265561, now seen corresponding path program 1 times [2024-12-01 23:16:03,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:03,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2062200090] [2024-12-01 23:16:03,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:03,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:03,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:03,768 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:03,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-01 23:16:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:03,848 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:16:03,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 23:16:03,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:03,893 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:03,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062200090] [2024-12-01 23:16:03,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062200090] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:03,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:03,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:16:03,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679434388] [2024-12-01 23:16:03,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:03,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:16:03,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:03,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:16:03,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:16:03,895 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:04,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:04,085 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2024-12-01 23:16:04,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:16:04,086 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-12-01 23:16:04,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:04,087 INFO L225 Difference]: With dead ends: 78 [2024-12-01 23:16:04,087 INFO L226 Difference]: Without dead ends: 78 [2024-12-01 23:16:04,087 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:16:04,088 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 2 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:04,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 281 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:16:04,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-12-01 23:16:04,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-12-01 23:16:04,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 74 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2024-12-01 23:16:04,092 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 22 [2024-12-01 23:16:04,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:04,093 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2024-12-01 23:16:04,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:04,093 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2024-12-01 23:16:04,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-12-01 23:16:04,093 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:04,094 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:04,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-01 23:16:04,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:04,294 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:04,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:04,294 INFO L85 PathProgramCache]: Analyzing trace with hash 626265562, now seen corresponding path program 1 times [2024-12-01 23:16:04,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:04,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872861152] [2024-12-01 23:16:04,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:04,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:04,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:04,296 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:04,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-01 23:16:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:04,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-01 23:16:04,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:04,396 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 [2024-12-01 23:16:04,491 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 23:16:04,491 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:04,491 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:04,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872861152] [2024-12-01 23:16:04,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872861152] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:04,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:04,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:16:04,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426808869] [2024-12-01 23:16:04,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:04,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:16:04,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:04,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:16:04,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:16:04,492 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:04,709 INFO L93 Difference]: Finished difference Result 77 states and 84 transitions. [2024-12-01 23:16:04,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:16:04,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-12-01 23:16:04,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:04,710 INFO L225 Difference]: With dead ends: 77 [2024-12-01 23:16:04,710 INFO L226 Difference]: Without dead ends: 77 [2024-12-01 23:16:04,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:16:04,711 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 1 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:04,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 303 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:16:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-12-01 23:16:04,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-12-01 23:16:04,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.5384615384615385) internal successors, (80), 73 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:04,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2024-12-01 23:16:04,716 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 22 [2024-12-01 23:16:04,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:04,716 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2024-12-01 23:16:04,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2024-12-01 23:16:04,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-01 23:16:04,717 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:04,717 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:04,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-01 23:16:04,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:04,918 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:04,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash -260617209, now seen corresponding path program 1 times [2024-12-01 23:16:04,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:04,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1986634156] [2024-12-01 23:16:04,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:04,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:04,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:04,923 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:04,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-01 23:16:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:05,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-01 23:16:05,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:05,094 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-12-01 23:16:05,177 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-12-01 23:16:05,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-12-01 23:16:05,203 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 4 not checked. [2024-12-01 23:16:05,203 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:05,451 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 23:16:05,452 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:05,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986634156] [2024-12-01 23:16:05,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986634156] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:16:05,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:16:05,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2024-12-01 23:16:05,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930318449] [2024-12-01 23:16:05,452 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:16:05,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 23:16:05,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:05,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 23:16:05,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2024-12-01 23:16:05,453 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:16:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:05,812 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2024-12-01 23:16:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:16:05,813 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2024-12-01 23:16:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:05,814 INFO L225 Difference]: With dead ends: 76 [2024-12-01 23:16:05,814 INFO L226 Difference]: Without dead ends: 76 [2024-12-01 23:16:05,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2024-12-01 23:16:05,815 INFO L435 NwaCegarLoop]: 72 mSDtfsCounter, 1 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:05,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 368 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 76 Unchecked, 0.3s Time] [2024-12-01 23:16:05,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-12-01 23:16:05,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-12-01 23:16:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 72 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2024-12-01 23:16:05,820 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 25 [2024-12-01 23:16:05,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:05,820 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2024-12-01 23:16:05,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:16:05,821 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2024-12-01 23:16:05,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-12-01 23:16:05,821 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:05,821 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:05,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-01 23:16:06,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:06,022 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:06,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:06,022 INFO L85 PathProgramCache]: Analyzing trace with hash -260617208, now seen corresponding path program 1 times [2024-12-01 23:16:06,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:06,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703638612] [2024-12-01 23:16:06,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:06,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:06,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:06,025 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:06,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-01 23:16:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:06,118 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-01 23:16:06,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:06,129 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 [2024-12-01 23:16:06,316 WARN L873 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |node_create_~temp~0#1.base| (select |c_#length| |node_create_~temp~0#1.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |node_create_~temp~0#1.base|)))) is different from true [2024-12-01 23:16:06,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:16:06,378 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 [2024-12-01 23:16:06,389 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:16:06,390 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 [2024-12-01 23:16:06,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-12-01 23:16:06,430 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:06,671 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:06,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703638612] [2024-12-01 23:16:06,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703638612] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:16:06,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2104216359] [2024-12-01 23:16:06,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:06,672 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-01 23:16:06,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-01 23:16:06,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-01 23:16:06,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-12-01 23:16:06,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:06,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-01 23:16:06,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:06,917 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 [2024-12-01 23:16:06,924 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 [2024-12-01 23:16:07,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-01 23:16:07,070 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 [2024-12-01 23:16:07,080 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:16:07,081 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 [2024-12-01 23:16:07,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-12-01 23:16:07,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:07,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2104216359] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:16:07,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:16:07,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2024-12-01 23:16:07,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589149477] [2024-12-01 23:16:07,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:16:07,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:16:07,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:07,268 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:16:07,268 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=87, Unknown=1, NotChecked=18, Total=132 [2024-12-01 23:16:07,268 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:07,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:07,627 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2024-12-01 23:16:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:16:07,628 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-12-01 23:16:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:07,628 INFO L225 Difference]: With dead ends: 83 [2024-12-01 23:16:07,628 INFO L226 Difference]: Without dead ends: 83 [2024-12-01 23:16:07,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=126, Unknown=1, NotChecked=22, Total=182 [2024-12-01 23:16:07,629 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 1 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:07,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 361 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 202 Invalid, 0 Unknown, 87 Unchecked, 0.3s Time] [2024-12-01 23:16:07,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-12-01 23:16:07,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2024-12-01 23:16:07,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 57 states have (on average 1.4912280701754386) internal successors, (85), 77 states have internal predecessors, (85), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:16:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2024-12-01 23:16:07,633 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 25 [2024-12-01 23:16:07,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:07,634 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2024-12-01 23:16:07,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:07,634 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2024-12-01 23:16:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-12-01 23:16:07,635 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:07,635 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:07,641 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-01 23:16:07,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-12-01 23:16:08,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-01 23:16:08,036 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:08,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:08,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1076644497, now seen corresponding path program 1 times [2024-12-01 23:16:08,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:08,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534311773] [2024-12-01 23:16:08,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:08,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:08,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:08,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:08,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-01 23:16:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:08,125 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-01 23:16:08,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:08,131 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 [2024-12-01 23:16:08,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 23:16:08,225 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:08,225 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:08,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534311773] [2024-12-01 23:16:08,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534311773] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:08,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:08,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:16:08,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828426357] [2024-12-01 23:16:08,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:08,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:16:08,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:08,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:16:08,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:16:08,226 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:08,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:08,576 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2024-12-01 23:16:08,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:16:08,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-12-01 23:16:08,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:08,577 INFO L225 Difference]: With dead ends: 85 [2024-12-01 23:16:08,577 INFO L226 Difference]: Without dead ends: 85 [2024-12-01 23:16:08,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:16:08,578 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 41 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:08,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 402 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-01 23:16:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-12-01 23:16:08,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-12-01 23:16:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.5166666666666666) internal successors, (91), 80 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:16:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2024-12-01 23:16:08,583 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 31 [2024-12-01 23:16:08,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:08,583 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2024-12-01 23:16:08,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:08,583 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2024-12-01 23:16:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-12-01 23:16:08,584 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:08,584 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:08,593 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-01 23:16:08,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:08,784 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:08,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:08,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1076644498, now seen corresponding path program 1 times [2024-12-01 23:16:08,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:08,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953043509] [2024-12-01 23:16:08,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:08,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:08,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:08,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:08,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-01 23:16:08,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:08,872 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-01 23:16:08,878 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:08,884 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 [2024-12-01 23:16:09,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-01 23:16:09,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:09,050 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:09,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953043509] [2024-12-01 23:16:09,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953043509] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:09,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:09,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:16:09,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215586105] [2024-12-01 23:16:09,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:09,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:16:09,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:09,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:16:09,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:16:09,052 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:09,512 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2024-12-01 23:16:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:16:09,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2024-12-01 23:16:09,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:09,513 INFO L225 Difference]: With dead ends: 85 [2024-12-01 23:16:09,513 INFO L226 Difference]: Without dead ends: 85 [2024-12-01 23:16:09,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:16:09,514 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 39 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:09,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 451 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:16:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-12-01 23:16:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-12-01 23:16:09,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 60 states have (on average 1.4833333333333334) internal successors, (89), 80 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:16:09,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2024-12-01 23:16:09,518 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 31 [2024-12-01 23:16:09,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:09,519 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2024-12-01 23:16:09,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:09,519 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2024-12-01 23:16:09,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-01 23:16:09,520 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:09,520 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:16:09,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-01 23:16:09,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:09,720 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:09,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:09,721 INFO L85 PathProgramCache]: Analyzing trace with hash -350639951, now seen corresponding path program 1 times [2024-12-01 23:16:09,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:09,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7233864] [2024-12-01 23:16:09,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:09,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:09,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:09,723 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:09,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-01 23:16:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:09,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-01 23:16:09,812 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 23:16:09,892 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:09,892 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:09,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7233864] [2024-12-01 23:16:09,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7233864] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:09,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:09,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:16:09,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122184988] [2024-12-01 23:16:09,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:09,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:16:09,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:09,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:16:09,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:16:09,893 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:10,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:10,290 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2024-12-01 23:16:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:16:10,291 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-12-01 23:16:10,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:10,291 INFO L225 Difference]: With dead ends: 88 [2024-12-01 23:16:10,291 INFO L226 Difference]: Without dead ends: 88 [2024-12-01 23:16:10,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:16:10,292 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 40 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:10,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 402 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:16:10,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-01 23:16:10,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-12-01 23:16:10,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 63 states have (on average 1.507936507936508) internal successors, (95), 83 states have internal predecessors, (95), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:16:10,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2024-12-01 23:16:10,296 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 33 [2024-12-01 23:16:10,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:10,296 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2024-12-01 23:16:10,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:10,296 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2024-12-01 23:16:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-12-01 23:16:10,297 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:10,297 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:16:10,305 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-01 23:16:10,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:10,498 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:10,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:10,498 INFO L85 PathProgramCache]: Analyzing trace with hash -350639950, now seen corresponding path program 1 times [2024-12-01 23:16:10,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:10,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638900251] [2024-12-01 23:16:10,499 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:10,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:10,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:10,501 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:10,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-01 23:16:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:10,589 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-01 23:16:10,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:10,616 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:16:10,616 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:10,617 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:10,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638900251] [2024-12-01 23:16:10,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638900251] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:10,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:10,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-01 23:16:10,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829221986] [2024-12-01 23:16:10,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:10,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-01 23:16:10,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:10,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-01 23:16:10,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-01 23:16:10,618 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:10,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:10,645 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2024-12-01 23:16:10,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:16:10,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2024-12-01 23:16:10,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:10,647 INFO L225 Difference]: With dead ends: 122 [2024-12-01 23:16:10,647 INFO L226 Difference]: Without dead ends: 122 [2024-12-01 23:16:10,647 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:16:10,647 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 120 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:10,648 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 154 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:16:10,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-12-01 23:16:10,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 90. [2024-12-01 23:16:10,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 65 states have (on average 1.4923076923076923) internal successors, (97), 85 states have internal predecessors, (97), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:16:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2024-12-01 23:16:10,652 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 33 [2024-12-01 23:16:10,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:10,652 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2024-12-01 23:16:10,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2024-12-01 23:16:10,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-01 23:16:10,653 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:10,653 INFO L218 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, 1, 1, 1, 1, 1] [2024-12-01 23:16:10,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-01 23:16:10,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:10,857 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:10,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:10,857 INFO L85 PathProgramCache]: Analyzing trace with hash -499535768, now seen corresponding path program 1 times [2024-12-01 23:16:10,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:10,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352913787] [2024-12-01 23:16:10,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:10,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:10,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:10,859 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:10,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-01 23:16:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:10,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-01 23:16:10,950 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:16:10,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:11,055 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-01 23:16:11,056 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:11,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352913787] [2024-12-01 23:16:11,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352913787] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:16:11,056 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:16:11,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-12-01 23:16:11,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980472940] [2024-12-01 23:16:11,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:16:11,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:16:11,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:11,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:16:11,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:16:11,057 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:16:11,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:11,189 INFO L93 Difference]: Finished difference Result 149 states and 173 transitions. [2024-12-01 23:16:11,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:16:11,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2024-12-01 23:16:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:11,191 INFO L225 Difference]: With dead ends: 149 [2024-12-01 23:16:11,191 INFO L226 Difference]: Without dead ends: 149 [2024-12-01 23:16:11,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2024-12-01 23:16:11,191 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 170 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:11,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 433 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:16:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-12-01 23:16:11,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 103. [2024-12-01 23:16:11,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 78 states have (on average 1.4615384615384615) internal successors, (114), 98 states have internal predecessors, (114), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:16:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 120 transitions. [2024-12-01 23:16:11,195 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 120 transitions. Word has length 34 [2024-12-01 23:16:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:11,195 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 120 transitions. [2024-12-01 23:16:11,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 10 states have internal predecessors, (40), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:16:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 120 transitions. [2024-12-01 23:16:11,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-01 23:16:11,195 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:11,195 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:16:11,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-01 23:16:11,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:11,396 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:11,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:11,396 INFO L85 PathProgramCache]: Analyzing trace with hash -499535699, now seen corresponding path program 1 times [2024-12-01 23:16:11,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:11,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742720632] [2024-12-01 23:16:11,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:11,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:11,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:11,398 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:11,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-01 23:16:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:11,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-01 23:16:11,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:11,522 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 [2024-12-01 23:16:11,631 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:16:11,631 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 [2024-12-01 23:16:11,680 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 [2024-12-01 23:16:11,757 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:16:11,757 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 36 treesize of output 35 [2024-12-01 23:16:11,933 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 [2024-12-01 23:16:11,994 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:11,994 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:12,135 INFO L349 Elim1Store]: treesize reduction 7, result has 58.8 percent of original size [2024-12-01 23:16:12,136 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 23 treesize of output 22 [2024-12-01 23:16:12,188 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_453 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_453) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) is different from false [2024-12-01 23:16:12,193 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:16:12,194 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 18 treesize of output 19 [2024-12-01 23:16:12,197 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 [2024-12-01 23:16:12,200 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 [2024-12-01 23:16:12,289 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:12,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742720632] [2024-12-01 23:16:12,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742720632] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:16:12,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1433773962] [2024-12-01 23:16:12,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:12,289 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-01 23:16:12,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-01 23:16:12,291 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-01 23:16:12,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-12-01 23:16:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:12,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-12-01 23:16:12,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:12,508 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 [2024-12-01 23:16:12,645 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-01 23:16:12,645 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 [2024-12-01 23:16:12,791 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 [2024-12-01 23:16:12,948 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:16:12,948 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 36 treesize of output 35 [2024-12-01 23:16:13,208 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 [2024-12-01 23:16:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:13,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:13,513 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:16:13,513 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 [2024-12-01 23:16:13,516 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 30 [2024-12-01 23:16:13,519 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 [2024-12-01 23:16:45,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1433773962] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:16:45,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:16:45,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 30 [2024-12-01 23:16:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411609296] [2024-12-01 23:16:45,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:16:45,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-01 23:16:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:45,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-01 23:16:45,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1567, Unknown=33, NotChecked=80, Total=1806 [2024-12-01 23:16:45,792 INFO L87 Difference]: Start difference. First operand 103 states and 120 transitions. Second operand has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 27 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:16:47,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:47,395 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2024-12-01 23:16:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-01 23:16:47,396 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 27 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-12-01 23:16:47,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:47,397 INFO L225 Difference]: With dead ends: 114 [2024-12-01 23:16:47,397 INFO L226 Difference]: Without dead ends: 114 [2024-12-01 23:16:47,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=151, Invalid=1800, Unknown=33, NotChecked=86, Total=2070 [2024-12-01 23:16:47,398 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 9 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:47,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1206 Invalid, 816 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-01 23:16:47,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-12-01 23:16:47,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 112. [2024-12-01 23:16:47,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 87 states have (on average 1.4252873563218391) internal successors, (124), 107 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:16:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2024-12-01 23:16:47,401 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 34 [2024-12-01 23:16:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:47,401 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2024-12-01 23:16:47,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 27 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:16:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2024-12-01 23:16:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-01 23:16:47,402 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:47,402 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:16:47,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-01 23:16:47,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-12-01 23:16:47,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-01 23:16:47,803 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:47,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:47,803 INFO L85 PathProgramCache]: Analyzing trace with hash -499535698, now seen corresponding path program 1 times [2024-12-01 23:16:47,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:47,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463320629] [2024-12-01 23:16:47,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:47,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:47,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:47,805 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:47,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-01 23:16:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:47,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-01 23:16:47,903 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:47,908 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 [2024-12-01 23:16:48,181 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:16:48,181 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 [2024-12-01 23:16:48,191 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 [2024-12-01 23:16:48,271 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 [2024-12-01 23:16:48,279 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 [2024-12-01 23:16:48,429 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:16:48,429 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 50 treesize of output 45 [2024-12-01 23:16:48,440 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 [2024-12-01 23:16:48,723 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 [2024-12-01 23:16:48,728 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 [2024-12-01 23:16:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:48,834 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:49,886 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_545 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_545) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_545 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_545) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_544) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))))) is different from false [2024-12-01 23:16:49,902 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:16:49,902 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 37 treesize of output 38 [2024-12-01 23:16:49,912 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:16:49,912 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 29 treesize of output 30 [2024-12-01 23:16:49,917 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 52 treesize of output 44 [2024-12-01 23:16:49,921 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 82 treesize of output 70 [2024-12-01 23:16:49,933 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 11 treesize of output 9 [2024-12-01 23:16:49,937 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 [2024-12-01 23:16:49,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:16:49,956 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 37 treesize of output 30 [2024-12-01 23:16:49,964 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 44 treesize of output 32 [2024-12-01 23:16:50,489 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:50,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463320629] [2024-12-01 23:16:50,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463320629] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:16:50,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1806607224] [2024-12-01 23:16:50,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:50,490 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-01 23:16:50,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-01 23:16:50,491 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-01 23:16:50,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-12-01 23:16:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:50,746 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-12-01 23:16:50,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:50,753 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 [2024-12-01 23:16:50,760 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 [2024-12-01 23:16:51,088 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:16:51,089 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 [2024-12-01 23:16:51,100 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 [2024-12-01 23:16:51,302 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 [2024-12-01 23:16:51,308 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 [2024-12-01 23:16:51,548 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:16:51,549 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 50 treesize of output 45 [2024-12-01 23:16:51,557 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 [2024-12-01 23:16:52,030 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 [2024-12-01 23:16:52,035 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 [2024-12-01 23:16:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:16:52,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:52,475 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:16:52,476 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 37 treesize of output 30 [2024-12-01 23:16:52,479 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 44 treesize of output 32 [2024-12-01 23:16:52,482 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 11 treesize of output 7 [2024-12-01 23:16:52,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:16:52,504 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 37 treesize of output 38 [2024-12-01 23:16:52,517 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:16:52,518 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 29 treesize of output 30 [2024-12-01 23:16:52,521 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:16:52,524 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 27 treesize of output 19 [2024-12-01 23:16:52,527 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:16:52,530 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 20 treesize of output 12 [2024-12-01 23:16:52,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1806607224] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:16:52,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:16:52,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 29 [2024-12-01 23:16:52,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023193030] [2024-12-01 23:16:52,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:16:52,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-01 23:16:52,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:52,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-01 23:16:52,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1437, Unknown=15, NotChecked=76, Total=1640 [2024-12-01 23:16:52,804 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 26 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:16:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:54,716 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2024-12-01 23:16:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-01 23:16:54,717 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 26 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-12-01 23:16:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:54,718 INFO L225 Difference]: With dead ends: 161 [2024-12-01 23:16:54,718 INFO L226 Difference]: Without dead ends: 161 [2024-12-01 23:16:54,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=145, Invalid=1824, Unknown=15, NotChecked=86, Total=2070 [2024-12-01 23:16:54,719 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 84 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:54,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 1093 Invalid, 928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-12-01 23:16:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-12-01 23:16:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 129. [2024-12-01 23:16:54,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 104 states have (on average 1.4134615384615385) internal successors, (147), 124 states have internal predecessors, (147), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-12-01 23:16:54,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2024-12-01 23:16:54,723 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 34 [2024-12-01 23:16:54,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:54,723 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2024-12-01 23:16:54,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.7241379310344827) internal successors, (50), 26 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:16:54,724 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2024-12-01 23:16:54,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-12-01 23:16:54,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:54,724 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:54,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-01 23:16:54,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-12-01 23:16:55,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-01 23:16:55,125 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:55,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:55,125 INFO L85 PathProgramCache]: Analyzing trace with hash 43924889, now seen corresponding path program 2 times [2024-12-01 23:16:55,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:55,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917986567] [2024-12-01 23:16:55,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 23:16:55,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:55,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:55,127 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:55,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-01 23:16:55,263 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 23:16:55,264 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:16:55,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:16:55,267 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-01 23:16:55,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:16:55,341 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:55,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917986567] [2024-12-01 23:16:55,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917986567] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:16:55,341 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:16:55,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-12-01 23:16:55,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555933812] [2024-12-01 23:16:55,341 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:16:55,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:16:55,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:55,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:16:55,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:16:55,342 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-01 23:16:55,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:55,369 INFO L93 Difference]: Finished difference Result 106 states and 123 transitions. [2024-12-01 23:16:55,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-01 23:16:55,369 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2024-12-01 23:16:55,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:55,370 INFO L225 Difference]: With dead ends: 106 [2024-12-01 23:16:55,370 INFO L226 Difference]: Without dead ends: 106 [2024-12-01 23:16:55,370 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:16:55,371 INFO L435 NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:55,371 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 297 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:16:55,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-12-01 23:16:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-12-01 23:16:55,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 102 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:55,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2024-12-01 23:16:55,374 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 37 [2024-12-01 23:16:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:55,374 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2024-12-01 23:16:55,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-01 23:16:55,375 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2024-12-01 23:16:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-12-01 23:16:55,375 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:55,375 INFO L218 NwaCegarLoop]: trace histogram [2, 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] [2024-12-01 23:16:55,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-01 23:16:55,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:55,576 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:55,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:55,576 INFO L85 PathProgramCache]: Analyzing trace with hash -404695367, now seen corresponding path program 1 times [2024-12-01 23:16:55,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:55,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1419735536] [2024-12-01 23:16:55,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:55,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:55,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:55,578 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:55,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-01 23:16:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:55,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:16:55,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:55,729 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:16:55,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:55,866 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:16:55,866 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:55,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419735536] [2024-12-01 23:16:55,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419735536] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:16:55,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:16:55,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2024-12-01 23:16:55,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148437828] [2024-12-01 23:16:55,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:16:55,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 23:16:55,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:55,867 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 23:16:55,867 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:16:55,867 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:16:55,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:55,992 INFO L93 Difference]: Finished difference Result 191 states and 226 transitions. [2024-12-01 23:16:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-01 23:16:55,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 41 [2024-12-01 23:16:55,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:55,993 INFO L225 Difference]: With dead ends: 191 [2024-12-01 23:16:55,993 INFO L226 Difference]: Without dead ends: 191 [2024-12-01 23:16:55,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-12-01 23:16:55,994 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 285 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:55,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 387 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:16:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2024-12-01 23:16:55,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 162. [2024-12-01 23:16:55,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 139 states have (on average 1.5323741007194245) internal successors, (213), 158 states have internal predecessors, (213), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 217 transitions. [2024-12-01 23:16:55,997 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 217 transitions. Word has length 41 [2024-12-01 23:16:55,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:55,998 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 217 transitions. [2024-12-01 23:16:55,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:16:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 217 transitions. [2024-12-01 23:16:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-12-01 23:16:55,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:55,998 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-12-01 23:16:56,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-01 23:16:56,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:56,199 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:56,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:56,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2119713670, now seen corresponding path program 1 times [2024-12-01 23:16:56,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:56,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929470661] [2024-12-01 23:16:56,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:56,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:56,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:56,201 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:56,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-01 23:16:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:56,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-01 23:16:56,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:56,385 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:16:56,385 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:56,497 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-01 23:16:56,497 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:56,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929470661] [2024-12-01 23:16:56,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929470661] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:16:56,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:16:56,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-12-01 23:16:56,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657523085] [2024-12-01 23:16:56,498 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:16:56,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:16:56,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:56,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:16:56,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:16:56,499 INFO L87 Difference]: Start difference. First operand 162 states and 217 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:16:56,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:56,608 INFO L93 Difference]: Finished difference Result 136 states and 168 transitions. [2024-12-01 23:16:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:16:56,609 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2024-12-01 23:16:56,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:56,610 INFO L225 Difference]: With dead ends: 136 [2024-12-01 23:16:56,610 INFO L226 Difference]: Without dead ends: 136 [2024-12-01 23:16:56,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-12-01 23:16:56,610 INFO L435 NwaCegarLoop]: 83 mSDtfsCounter, 175 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:56,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 309 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:16:56,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-12-01 23:16:56,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2024-12-01 23:16:56,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 109 states have (on average 1.4770642201834863) internal successors, (161), 124 states have internal predecessors, (161), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 165 transitions. [2024-12-01 23:16:56,613 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 165 transitions. Word has length 42 [2024-12-01 23:16:56,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:56,613 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 165 transitions. [2024-12-01 23:16:56,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:16:56,614 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 165 transitions. [2024-12-01 23:16:56,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-01 23:16:56,614 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:56,614 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:56,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-01 23:16:56,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:56,814 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:56,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:56,815 INFO L85 PathProgramCache]: Analyzing trace with hash -533419319, now seen corresponding path program 2 times [2024-12-01 23:16:56,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:56,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1143629129] [2024-12-01 23:16:56,815 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 23:16:56,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:56,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:56,817 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:56,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-01 23:16:56,920 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-01 23:16:56,921 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:16:56,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-01 23:16:56,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-01 23:16:56,985 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:56,985 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:56,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143629129] [2024-12-01 23:16:56,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143629129] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:56,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:56,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-01 23:16:56,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692277731] [2024-12-01 23:16:56,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:56,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-01 23:16:56,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:56,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-01 23:16:56,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-01 23:16:56,986 INFO L87 Difference]: Start difference. First operand 128 states and 165 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:57,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:57,051 INFO L93 Difference]: Finished difference Result 137 states and 166 transitions. [2024-12-01 23:16:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-01 23:16:57,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2024-12-01 23:16:57,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:57,052 INFO L225 Difference]: With dead ends: 137 [2024-12-01 23:16:57,052 INFO L226 Difference]: Without dead ends: 137 [2024-12-01 23:16:57,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:16:57,053 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 99 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:57,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 204 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:16:57,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-12-01 23:16:57,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 127. [2024-12-01 23:16:57,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.462962962962963) internal successors, (158), 123 states have internal predecessors, (158), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:57,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 162 transitions. [2024-12-01 23:16:57,056 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 162 transitions. Word has length 46 [2024-12-01 23:16:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:57,056 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 162 transitions. [2024-12-01 23:16:57,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 162 transitions. [2024-12-01 23:16:57,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-12-01 23:16:57,057 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:57,057 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:57,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-01 23:16:57,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:57,257 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:57,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash -533419388, now seen corresponding path program 1 times [2024-12-01 23:16:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005547141] [2024-12-01 23:16:57,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:57,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:57,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:57,260 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:57,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-01 23:16:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:57,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-01 23:16:57,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:57,381 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 [2024-12-01 23:16:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:16:57,646 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:16:57,647 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:57,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005547141] [2024-12-01 23:16:57,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005547141] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:16:57,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:16:57,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:16:57,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170566900] [2024-12-01 23:16:57,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:16:57,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:16:57,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:16:57,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:16:57,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:16:57,648 INFO L87 Difference]: Start difference. First operand 127 states and 162 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:58,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:16:58,065 INFO L93 Difference]: Finished difference Result 127 states and 155 transitions. [2024-12-01 23:16:58,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:16:58,066 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2024-12-01 23:16:58,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:16:58,066 INFO L225 Difference]: With dead ends: 127 [2024-12-01 23:16:58,066 INFO L226 Difference]: Without dead ends: 127 [2024-12-01 23:16:58,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-12-01 23:16:58,067 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 21 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:16:58,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 432 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:16:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-12-01 23:16:58,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2024-12-01 23:16:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 108 states have (on average 1.3981481481481481) internal successors, (151), 123 states have internal predecessors, (151), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:16:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 155 transitions. [2024-12-01 23:16:58,070 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 155 transitions. Word has length 46 [2024-12-01 23:16:58,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:16:58,071 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 155 transitions. [2024-12-01 23:16:58,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:16:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 155 transitions. [2024-12-01 23:16:58,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-01 23:16:58,071 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:16:58,071 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:16:58,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-01 23:16:58,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:58,272 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:16:58,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:16:58,272 INFO L85 PathProgramCache]: Analyzing trace with hash 282032958, now seen corresponding path program 1 times [2024-12-01 23:16:58,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:16:58,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [318775592] [2024-12-01 23:16:58,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:58,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:16:58,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:16:58,274 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:16:58,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-01 23:16:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:16:58,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-01 23:16:58,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:16:58,553 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:16:58,553 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 [2024-12-01 23:16:58,604 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 [2024-12-01 23:16:58,678 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:16:58,678 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 36 treesize of output 35 [2024-12-01 23:16:58,987 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:16:58,987 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 36 treesize of output 35 [2024-12-01 23:16:59,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 19 [2024-12-01 23:16:59,127 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 [2024-12-01 23:16:59,204 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-01 23:16:59,204 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:16:59,322 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_906 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_906) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (not (= v_ArrVal_906 (let ((.cse0 (bvadd |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| (_ bv4 32)))) (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 (select v_ArrVal_906 .cse0))))))) is different from false [2024-12-01 23:16:59,352 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_905 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_905) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) is different from false [2024-12-01 23:16:59,453 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_905 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_905) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) is different from false [2024-12-01 23:16:59,465 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_905 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_905) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) is different from false [2024-12-01 23:16:59,478 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_905 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_905) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))))) is different from false [2024-12-01 23:16:59,486 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_905 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_905) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))) is different from false [2024-12-01 23:16:59,504 INFO L349 Elim1Store]: treesize reduction 7, result has 74.1 percent of original size [2024-12-01 23:16:59,504 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 [2024-12-01 23:16:59,512 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_905 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_904 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_904))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_905)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) is different from false [2024-12-01 23:16:59,527 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_905 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_904 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_904))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_905)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) is different from false [2024-12-01 23:16:59,537 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:16:59,538 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 36 treesize of output 29 [2024-12-01 23:16:59,541 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 236 treesize of output 200 [2024-12-01 23:16:59,548 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 155 treesize of output 147 [2024-12-01 23:16:59,552 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 147 treesize of output 135 [2024-12-01 23:16:59,716 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:16:59,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318775592] [2024-12-01 23:16:59,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318775592] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:16:59,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1567109519] [2024-12-01 23:16:59,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:16:59,716 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-01 23:16:59,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-01 23:16:59,718 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-01 23:16:59,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-12-01 23:17:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:00,059 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-12-01 23:17:00,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:00,066 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 [2024-12-01 23:17:00,274 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-01 23:17:00,274 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 [2024-12-01 23:17:00,461 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 [2024-12-01 23:17:00,686 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:17:00,686 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 36 treesize of output 35 [2024-12-01 23:17:01,362 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:17:01,362 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 36 treesize of output 35 [2024-12-01 23:17:01,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-12-01 23:17:01,622 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 [2024-12-01 23:17:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-01 23:17:01,824 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:17:01,864 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_964 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= v_ArrVal_964 (let ((.cse0 (bvadd |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| (_ bv4 32)))) (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 (select v_ArrVal_964 .cse0))))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_964) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))) is different from false [2024-12-01 23:17:01,896 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_963 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_963) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))))) is different from false [2024-12-01 23:17:02,014 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_962 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_905 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_962))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_905)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (_ bv1 1)))) is different from false [2024-12-01 23:17:02,028 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_962 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_905 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_962))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_905)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))))) is different from false [2024-12-01 23:17:02,036 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:02,036 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 40 treesize of output 33 [2024-12-01 23:17:02,039 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 268 treesize of output 232 [2024-12-01 23:17:02,048 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 187 treesize of output 175 [2024-12-01 23:17:02,053 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 175 treesize of output 167 [2024-12-01 23:17:02,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1567109519] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:17:02,726 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:17:02,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 36 [2024-12-01 23:17:02,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552943642] [2024-12-01 23:17:02,726 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:17:02,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-12-01 23:17:02,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:17:02,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-12-01 23:17:02,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1753, Unknown=24, NotChecked=1140, Total=3080 [2024-12-01 23:17:02,728 INFO L87 Difference]: Start difference. First operand 127 states and 155 transitions. Second operand has 37 states, 36 states have (on average 2.138888888888889) internal successors, (77), 33 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:17:04,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:04,333 INFO L93 Difference]: Finished difference Result 143 states and 183 transitions. [2024-12-01 23:17:04,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-01 23:17:04,334 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.138888888888889) internal successors, (77), 33 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2024-12-01 23:17:04,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:04,334 INFO L225 Difference]: With dead ends: 143 [2024-12-01 23:17:04,334 INFO L226 Difference]: Without dead ends: 143 [2024-12-01 23:17:04,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=188, Invalid=1998, Unknown=24, NotChecked=1212, Total=3422 [2024-12-01 23:17:04,336 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 30 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:04,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1034 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-01 23:17:04,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-12-01 23:17:04,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2024-12-01 23:17:04,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 124 states have (on average 1.4435483870967742) internal successors, (179), 139 states have internal predecessors, (179), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:17:04,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 183 transitions. [2024-12-01 23:17:04,339 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 183 transitions. Word has length 49 [2024-12-01 23:17:04,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:04,339 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 183 transitions. [2024-12-01 23:17:04,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.138888888888889) internal successors, (77), 33 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:17:04,339 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 183 transitions. [2024-12-01 23:17:04,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-12-01 23:17:04,339 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:04,339 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:17:04,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-12-01 23:17:04,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-01 23:17:04,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:04,740 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:17:04,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:04,740 INFO L85 PathProgramCache]: Analyzing trace with hash 282032959, now seen corresponding path program 1 times [2024-12-01 23:17:04,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:17:04,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866159687] [2024-12-01 23:17:04,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:04,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:04,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:17:04,742 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:17:04,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-01 23:17:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:04,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-12-01 23:17:04,912 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:04,916 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 [2024-12-01 23:17:05,174 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-12-01 23:17:05,174 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 [2024-12-01 23:17:05,191 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:17:05,192 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 [2024-12-01 23:17:05,273 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 [2024-12-01 23:17:05,280 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 [2024-12-01 23:17:05,402 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:17:05,402 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 50 treesize of output 45 [2024-12-01 23:17:05,407 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 [2024-12-01 23:17:05,830 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:17:05,831 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 50 treesize of output 45 [2024-12-01 23:17:05,836 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 [2024-12-01 23:17:05,905 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 37 treesize of output 17 [2024-12-01 23:17:05,916 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 11 [2024-12-01 23:17:06,047 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 25 treesize of output 13 [2024-12-01 23:17:06,052 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 [2024-12-01 23:17:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-01 23:17:06,148 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:17:06,627 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|)) (.cse0 (bvadd |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| (_ bv4 32)))) (and (forall ((v_ArrVal_1028 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= v_ArrVal_1028 (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 (select v_ArrVal_1028 .cse0)))) (forall ((v_ArrVal_1027 (_ BitVec 32))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store .cse1 .cse0 v_ArrVal_1027)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1028) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))) (forall ((v_ArrVal_1027 (_ BitVec 32))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store .cse1 .cse0 v_ArrVal_1027)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2)))))) is different from false [2024-12-01 23:17:07,997 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1023 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1024 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1023))) (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1024)) (.cse1 (select (select .cse2 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (or (not (bvule (bvadd (_ bv8 32) (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| .cse1))) (forall ((v_ArrVal_1025 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1026 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store .cse0 .cse1 v_ArrVal_1025) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1026) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))))))) (forall ((v_ArrVal_1023 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1024 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1024)) (.cse4 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1023) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (or (not (bvule (bvadd (_ bv8 32) (select (select .cse3 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| .cse4))) (forall ((v_ArrVal_1025 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (store .cse3 .cse4 v_ArrVal_1025) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd .cse5 (_ bv4 32)) (bvadd .cse5 (_ bv8 32))))))))) is different from false [2024-12-01 23:17:08,085 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1023 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1024 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1024)) (.cse1 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1023) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (or (not (bvule (bvadd (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) (_ bv8 32)) (select |c_#length| .cse1))) (forall ((v_ArrVal_1025 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store .cse0 .cse1 v_ArrVal_1025) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) (forall ((v_ArrVal_1023 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1024 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1023))) (let ((.cse3 (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1024)) (.cse4 (select (select .cse5 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (or (not (bvule (bvadd (select (select .cse3 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) (_ bv8 32)) (select |c_#length| .cse4))) (forall ((v_ArrVal_1025 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1026 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse3 .cse4 v_ArrVal_1025) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (select |c_#length| (select (select (store .cse5 .cse4 v_ArrVal_1026) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))))))))) is different from false [2024-12-01 23:17:08,116 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:08,116 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 112 treesize of output 104 [2024-12-01 23:17:08,151 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:08,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2024-12-01 23:17:08,158 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 458 treesize of output 406 [2024-12-01 23:17:08,165 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 776 treesize of output 732 [2024-12-01 23:17:08,176 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 74 treesize of output 70 [2024-12-01 23:17:08,183 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 70 treesize of output 66 [2024-12-01 23:17:08,191 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 67 treesize of output 59 [2024-12-01 23:17:08,197 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 59 treesize of output 55 [2024-12-01 23:17:08,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:08,367 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 112 treesize of output 96 [2024-12-01 23:17:08,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:08,377 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 72 [2024-12-01 23:17:08,381 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 130 treesize of output 114 [2024-12-01 23:17:08,386 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 348 treesize of output 312 [2024-12-01 23:17:08,395 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 71 treesize of output 65 [2024-12-01 23:17:08,402 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 65 treesize of output 59 [2024-12-01 23:17:08,409 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 66 treesize of output 58 [2024-12-01 23:17:10,016 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:17:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866159687] [2024-12-01 23:17:10,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866159687] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:17:10,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [486470806] [2024-12-01 23:17:10,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:10,017 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-01 23:17:10,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-01 23:17:10,018 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-01 23:17:10,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-12-01 23:17:10,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:10,399 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-01 23:17:10,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:10,408 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 [2024-12-01 23:17:10,416 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 [2024-12-01 23:17:10,874 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-12-01 23:17:10,874 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 [2024-12-01 23:17:10,893 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:17:10,893 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 [2024-12-01 23:17:11,171 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 [2024-12-01 23:17:11,177 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 [2024-12-01 23:17:11,492 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:17:11,492 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 50 treesize of output 45 [2024-12-01 23:17:11,501 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 [2024-12-01 23:17:12,568 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:17:12,568 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 50 treesize of output 45 [2024-12-01 23:17:12,576 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 [2024-12-01 23:17:12,649 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 [2024-12-01 23:17:12,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2024-12-01 23:17:12,896 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 [2024-12-01 23:17:12,904 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 [2024-12-01 23:17:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-01 23:17:12,915 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:17:13,051 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|)) (.cse2 (bvadd |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| (_ bv4 32)))) (and (forall ((v_ArrVal_1097 (_ BitVec 32))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store .cse1 .cse2 v_ArrVal_1097)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1096 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse2 (select v_ArrVal_1096 .cse2)) v_ArrVal_1096)) (forall ((v_ArrVal_1097 (_ BitVec 32))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store .cse1 .cse2 v_ArrVal_1097)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1096) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))))) is different from false [2024-12-01 23:17:13,767 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1093 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1094) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1093) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1094) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0))))) is different from false [2024-12-01 23:17:14,326 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (and (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_1094) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1093 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_1094) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_1093) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))))) is different from false [2024-12-01 23:17:14,359 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (and (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_1094) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1093 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_1094) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_1093) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|)))))) is different from false [2024-12-01 23:17:14,383 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1093 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1094) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_1093) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)))) (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_1094) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-12-01 23:17:14,437 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1092 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1091 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1092) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1091) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1094) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1092 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1093 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1091 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1091))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1092) .cse1 v_ArrVal_1094) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1093) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))))))) is different from false [2024-12-01 23:17:14,480 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1092 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1091 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1092) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1091) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1094) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1092 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1093 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1091 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1091))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1092) .cse1 v_ArrVal_1094) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) (select |c_#length| (select (select (store .cse2 .cse1 v_ArrVal_1093) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))))))) is different from false [2024-12-01 23:17:14,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:14,496 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 73 treesize of output 74 [2024-12-01 23:17:14,507 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:14,507 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 65 treesize of output 50 [2024-12-01 23:17:14,512 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 632 treesize of output 556 [2024-12-01 23:17:14,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 751 treesize of output 715 [2024-12-01 23:17:14,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 375 treesize of output 359 [2024-12-01 23:17:14,536 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 359 treesize of output 351 [2024-12-01 23:17:14,540 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 351 treesize of output 335 [2024-12-01 23:17:14,545 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 335 treesize of output 303 [2024-12-01 23:17:15,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:15,153 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 73 treesize of output 66 [2024-12-01 23:17:15,175 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:15,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 50 [2024-12-01 23:17:15,191 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 84 treesize of output 72 [2024-12-01 23:17:15,201 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 182 treesize of output 162 [2024-12-01 23:17:15,212 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 40 treesize of output 36 [2024-12-01 23:17:15,227 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 36 treesize of output 32 [2024-12-01 23:17:15,233 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 66 treesize of output 58 [2024-12-01 23:17:16,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [486470806] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:17:16,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:17:16,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 35 [2024-12-01 23:17:16,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306844011] [2024-12-01 23:17:16,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:17:16,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-01 23:17:16,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:17:16,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-01 23:17:16,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2643, Unknown=59, NotChecked=1130, Total=4032 [2024-12-01 23:17:16,146 INFO L87 Difference]: Start difference. First operand 143 states and 183 transitions. Second operand has 36 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:17:18,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:18,316 INFO L93 Difference]: Finished difference Result 143 states and 175 transitions. [2024-12-01 23:17:18,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-01 23:17:18,316 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2024-12-01 23:17:18,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:18,317 INFO L225 Difference]: With dead ends: 143 [2024-12-01 23:17:18,317 INFO L226 Difference]: Without dead ends: 143 [2024-12-01 23:17:18,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=255, Invalid=3383, Unknown=62, NotChecked=1270, Total=4970 [2024-12-01 23:17:18,318 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 53 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 793 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1045 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:18,319 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1045 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 793 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-01 23:17:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-12-01 23:17:18,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2024-12-01 23:17:18,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 121 states have (on average 1.3884297520661157) internal successors, (168), 136 states have internal predecessors, (168), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:17:18,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 172 transitions. [2024-12-01 23:17:18,321 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 172 transitions. Word has length 49 [2024-12-01 23:17:18,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:18,321 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 172 transitions. [2024-12-01 23:17:18,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:17:18,322 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 172 transitions. [2024-12-01 23:17:18,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-01 23:17:18,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:18,322 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:17:18,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-12-01 23:17:18,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-01 23:17:18,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:18,723 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:17:18,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1085820680, now seen corresponding path program 2 times [2024-12-01 23:17:18,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:17:18,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893649391] [2024-12-01 23:17:18,723 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 23:17:18,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:18,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:17:18,725 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:17:18,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-01 23:17:19,192 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 23:17:19,192 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:17:19,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-01 23:17:19,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:19,276 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-01 23:17:19,276 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:17:19,625 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-01 23:17:19,625 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:17:19,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893649391] [2024-12-01 23:17:19,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893649391] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:17:19,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:17:19,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2024-12-01 23:17:19,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867345317] [2024-12-01 23:17:19,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:17:19,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-01 23:17:19,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:17:19,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-01 23:17:19,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:17:19,626 INFO L87 Difference]: Start difference. First operand 140 states and 172 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:17:19,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:19,990 INFO L93 Difference]: Finished difference Result 149 states and 169 transitions. [2024-12-01 23:17:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-01 23:17:19,991 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2024-12-01 23:17:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:19,991 INFO L225 Difference]: With dead ends: 149 [2024-12-01 23:17:19,991 INFO L226 Difference]: Without dead ends: 149 [2024-12-01 23:17:19,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2024-12-01 23:17:19,992 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 143 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:19,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 467 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:17:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-12-01 23:17:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 137. [2024-12-01 23:17:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.347457627118644) internal successors, (159), 133 states have internal predecessors, (159), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:17:19,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 163 transitions. [2024-12-01 23:17:19,994 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 163 transitions. Word has length 52 [2024-12-01 23:17:19,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:19,995 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 163 transitions. [2024-12-01 23:17:19,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 12 states have internal predecessors, (66), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:17:19,995 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 163 transitions. [2024-12-01 23:17:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-12-01 23:17:19,995 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:19,995 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:17:20,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-12-01 23:17:20,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:20,196 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:17:20,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash -687897713, now seen corresponding path program 1 times [2024-12-01 23:17:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:17:20,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2123389401] [2024-12-01 23:17:20,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:20,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:20,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:17:20,198 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:17:20,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-12-01 23:17:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:20,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-12-01 23:17:20,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:20,559 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:17:20,559 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 [2024-12-01 23:17:20,653 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 [2024-12-01 23:17:20,660 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 [2024-12-01 23:17:20,793 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:17:20,794 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 41 treesize of output 38 [2024-12-01 23:17:20,800 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 [2024-12-01 23:17:21,363 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:17:21,363 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 60 treesize of output 53 [2024-12-01 23:17:21,368 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 [2024-12-01 23:17:21,379 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 19 treesize of output 11 [2024-12-01 23:17:21,622 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 27 treesize of output 11 [2024-12-01 23:17:21,629 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 19 [2024-12-01 23:17:21,637 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-12-01 23:17:21,883 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 [2024-12-01 23:17:21,889 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 [2024-12-01 23:17:22,190 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-01 23:17:22,191 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:17:23,477 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:23,478 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 40 treesize of output 41 [2024-12-01 23:17:23,503 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:23,503 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 79 treesize of output 78 [2024-12-01 23:17:23,515 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 29 treesize of output 18 [2024-12-01 23:17:26,180 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:26,180 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 37 treesize of output 30 [2024-12-01 23:17:26,184 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 245 treesize of output 209 [2024-12-01 23:17:26,190 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 81 treesize of output 75 [2024-12-01 23:17:26,195 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 56 treesize of output 50 [2024-12-01 23:17:26,220 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-01 23:17:26,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 1 [2024-12-01 23:17:26,227 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-01 23:17:26,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 1 [2024-12-01 23:17:27,294 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:17:27,294 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:17:27,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123389401] [2024-12-01 23:17:27,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123389401] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:17:27,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:17:27,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 31] total 57 [2024-12-01 23:17:27,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566508680] [2024-12-01 23:17:27,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:17:27,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-12-01 23:17:27,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:17:27,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-12-01 23:17:27,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=2999, Unknown=26, NotChecked=0, Total=3192 [2024-12-01 23:17:27,297 INFO L87 Difference]: Start difference. First operand 137 states and 163 transitions. Second operand has 57 states, 56 states have (on average 1.6428571428571428) internal successors, (92), 51 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-01 23:17:33,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:33,182 INFO L93 Difference]: Finished difference Result 137 states and 162 transitions. [2024-12-01 23:17:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-01 23:17:33,183 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.6428571428571428) internal successors, (92), 51 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2024-12-01 23:17:33,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:33,184 INFO L225 Difference]: With dead ends: 137 [2024-12-01 23:17:33,184 INFO L226 Difference]: Without dead ends: 137 [2024-12-01 23:17:33,187 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1079 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=302, Invalid=4502, Unknown=26, NotChecked=0, Total=4830 [2024-12-01 23:17:33,188 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 197 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:33,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1729 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-12-01 23:17:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-12-01 23:17:33,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-12-01 23:17:33,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 118 states have (on average 1.3389830508474576) internal successors, (158), 133 states have internal predecessors, (158), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:17:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 162 transitions. [2024-12-01 23:17:33,192 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 162 transitions. Word has length 55 [2024-12-01 23:17:33,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:33,192 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 162 transitions. [2024-12-01 23:17:33,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.6428571428571428) internal successors, (92), 51 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-01 23:17:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 162 transitions. [2024-12-01 23:17:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-12-01 23:17:33,192 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:33,193 INFO L218 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:17:33,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-12-01 23:17:33,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:33,393 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:17:33,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:33,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1036014724, now seen corresponding path program 1 times [2024-12-01 23:17:33,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:17:33,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2143406162] [2024-12-01 23:17:33,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:33,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:33,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:17:33,395 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:17:33,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-01 23:17:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:33,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-12-01 23:17:33,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:33,926 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 [2024-12-01 23:17:34,450 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 23:17:34,451 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:17:35,399 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 32 [2024-12-01 23:17:35,718 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-01 23:17:35,718 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:17:35,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143406162] [2024-12-01 23:17:35,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143406162] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:17:35,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:17:35,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 34 [2024-12-01 23:17:35,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106402342] [2024-12-01 23:17:35,719 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:17:35,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-12-01 23:17:35,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:17:35,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-12-01 23:17:35,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2024-12-01 23:17:35,720 INFO L87 Difference]: Start difference. First operand 137 states and 162 transitions. Second operand has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 33 states have internal predecessors, (100), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:17:37,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:37,316 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2024-12-01 23:17:37,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-01 23:17:37,317 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 33 states have internal predecessors, (100), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2024-12-01 23:17:37,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:37,317 INFO L225 Difference]: With dead ends: 79 [2024-12-01 23:17:37,317 INFO L226 Difference]: Without dead ends: 79 [2024-12-01 23:17:37,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=226, Invalid=1334, Unknown=0, NotChecked=0, Total=1560 [2024-12-01 23:17:37,318 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 47 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:37,318 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 966 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-01 23:17:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-12-01 23:17:37,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-12-01 23:17:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 75 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:17:37,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 81 transitions. [2024-12-01 23:17:37,320 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 81 transitions. Word has length 62 [2024-12-01 23:17:37,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:37,320 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 81 transitions. [2024-12-01 23:17:37,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.9411764705882355) internal successors, (100), 33 states have internal predecessors, (100), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:17:37,320 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 81 transitions. [2024-12-01 23:17:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-01 23:17:37,320 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:37,320 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:17:37,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-12-01 23:17:37,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:37,521 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:17:37,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:37,521 INFO L85 PathProgramCache]: Analyzing trace with hash 2051282419, now seen corresponding path program 1 times [2024-12-01 23:17:37,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:17:37,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496523113] [2024-12-01 23:17:37,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:37,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:37,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:17:37,523 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:17:37,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-12-01 23:17:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:37,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-01 23:17:37,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:37,691 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 [2024-12-01 23:17:37,942 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:17:37,942 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:17:37,942 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:17:37,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496523113] [2024-12-01 23:17:37,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496523113] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:17:37,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:17:37,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:17:37,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122126429] [2024-12-01 23:17:37,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:17:37,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:17:37,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:17:37,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:17:37,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:17:37,943 INFO L87 Difference]: Start difference. First operand 79 states and 81 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:17:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:38,582 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2024-12-01 23:17:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:17:38,583 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2024-12-01 23:17:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:38,583 INFO L225 Difference]: With dead ends: 93 [2024-12-01 23:17:38,584 INFO L226 Difference]: Without dead ends: 93 [2024-12-01 23:17:38,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:17:38,584 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 16 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:38,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 266 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-01 23:17:38,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-12-01 23:17:38,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 82. [2024-12-01 23:17:38,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 78 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:17:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2024-12-01 23:17:38,586 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 63 [2024-12-01 23:17:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:38,586 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2024-12-01 23:17:38,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:17:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2024-12-01 23:17:38,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-01 23:17:38,587 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:38,587 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:17:38,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-12-01 23:17:38,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:38,787 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:17:38,788 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:38,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2051282420, now seen corresponding path program 1 times [2024-12-01 23:17:38,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:17:38,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [278538895] [2024-12-01 23:17:38,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:38,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:38,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:17:38,790 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:17:38,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-01 23:17:38,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:38,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-12-01 23:17:38,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:38,971 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 [2024-12-01 23:17:39,337 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:17:39,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:17:39,337 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:17:39,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278538895] [2024-12-01 23:17:39,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278538895] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:17:39,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:17:39,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-01 23:17:39,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757939421] [2024-12-01 23:17:39,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:17:39,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:17:39,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:17:39,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:17:39,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:17:39,338 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:17:39,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:39,791 INFO L93 Difference]: Finished difference Result 80 states and 84 transitions. [2024-12-01 23:17:39,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:17:39,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 63 [2024-12-01 23:17:39,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:39,792 INFO L225 Difference]: With dead ends: 80 [2024-12-01 23:17:39,792 INFO L226 Difference]: Without dead ends: 80 [2024-12-01 23:17:39,792 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:17:39,793 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:39,793 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 300 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-01 23:17:39,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-01 23:17:39,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-01 23:17:39,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.1594202898550725) internal successors, (80), 76 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:17:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2024-12-01 23:17:39,795 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 63 [2024-12-01 23:17:39,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:39,795 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2024-12-01 23:17:39,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:17:39,795 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2024-12-01 23:17:39,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-01 23:17:39,796 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:39,796 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:17:39,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-01 23:17:39,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:39,996 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:17:39,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:39,997 INFO L85 PathProgramCache]: Analyzing trace with hash -834720567, now seen corresponding path program 1 times [2024-12-01 23:17:39,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:17:39,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544136726] [2024-12-01 23:17:39,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:39,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:39,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:17:39,999 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:17:40,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-12-01 23:17:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:40,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-01 23:17:40,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:17:40,313 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-01 23:17:40,313 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:17:40,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544136726] [2024-12-01 23:17:40,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544136726] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:17:40,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:17:40,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-01 23:17:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969239139] [2024-12-01 23:17:40,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:17:40,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-01 23:17:40,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:17:40,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-01 23:17:40,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:17:40,314 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:17:40,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:40,537 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2024-12-01 23:17:40,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-01 23:17:40,538 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2024-12-01 23:17:40,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:40,538 INFO L225 Difference]: With dead ends: 80 [2024-12-01 23:17:40,538 INFO L226 Difference]: Without dead ends: 80 [2024-12-01 23:17:40,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-12-01 23:17:40,539 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 17 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:40,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 354 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:17:40,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-01 23:17:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-12-01 23:17:40,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 69 states have (on average 1.144927536231884) internal successors, (79), 76 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:17:40,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2024-12-01 23:17:40,541 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 64 [2024-12-01 23:17:40,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:40,541 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2024-12-01 23:17:40,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:17:40,541 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2024-12-01 23:17:40,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-01 23:17:40,541 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:40,542 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:17:40,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-12-01 23:17:40,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:40,742 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:17:40,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:40,742 INFO L85 PathProgramCache]: Analyzing trace with hash 959937570, now seen corresponding path program 1 times [2024-12-01 23:17:40,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:17:40,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493910326] [2024-12-01 23:17:40,743 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:40,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:40,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:17:40,744 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:17:40,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-01 23:17:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:40,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-01 23:17:40,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:41,053 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 [2024-12-01 23:17:41,108 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:17:41,108 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:17:41,183 INFO L349 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2024-12-01 23:17:41,184 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 20 treesize of output 19 [2024-12-01 23:17:41,218 INFO L349 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2024-12-01 23:17:41,218 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 11 treesize of output 11 [2024-12-01 23:17:41,245 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-01 23:17:41,245 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:17:41,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493910326] [2024-12-01 23:17:41,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493910326] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:17:41,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:17:41,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-12-01 23:17:41,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229454199] [2024-12-01 23:17:41,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:17:41,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-01 23:17:41,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:17:41,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-01 23:17:41,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-01 23:17:41,246 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:17:41,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:17:41,790 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2024-12-01 23:17:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-01 23:17:41,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 66 [2024-12-01 23:17:41,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:17:41,791 INFO L225 Difference]: With dead ends: 87 [2024-12-01 23:17:41,791 INFO L226 Difference]: Without dead ends: 87 [2024-12-01 23:17:41,791 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-12-01 23:17:41,791 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 21 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-01 23:17:41,792 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 310 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-01 23:17:41,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-12-01 23:17:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2024-12-01 23:17:41,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 70 states have (on average 1.1428571428571428) internal successors, (80), 76 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:17:41,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2024-12-01 23:17:41,793 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 66 [2024-12-01 23:17:41,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:17:41,793 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2024-12-01 23:17:41,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-01 23:17:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2024-12-01 23:17:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-01 23:17:41,794 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:17:41,794 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:17:41,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-12-01 23:17:41,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:41,995 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:17:41,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:17:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 959937571, now seen corresponding path program 1 times [2024-12-01 23:17:41,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:17:41,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1429037320] [2024-12-01 23:17:41,995 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:41,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:17:41,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:17:41,997 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:17:41,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-12-01 23:17:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:42,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-12-01 23:17:42,222 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:42,228 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 [2024-12-01 23:17:42,438 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:17:42,438 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 [2024-12-01 23:17:42,541 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 [2024-12-01 23:17:42,553 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 [2024-12-01 23:17:42,707 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:17:42,708 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 41 treesize of output 38 [2024-12-01 23:17:42,712 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 [2024-12-01 23:17:42,977 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 [2024-12-01 23:17:43,112 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 [2024-12-01 23:17:43,254 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 8 treesize of output 1 [2024-12-01 23:17:43,257 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 27 treesize of output 11 [2024-12-01 23:17:43,821 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 [2024-12-01 23:17:43,963 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-01 23:17:43,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:17:44,716 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:44,716 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 38 treesize of output 42 [2024-12-01 23:17:46,293 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1540 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1540) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) is different from false [2024-12-01 23:17:46,525 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1540 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_1540) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) is different from false [2024-12-01 23:17:46,543 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1540 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_1540) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) is different from false [2024-12-01 23:17:46,555 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1540 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1540) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) is different from false [2024-12-01 23:17:46,571 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1539 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1540 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1538 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1539) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1538) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1540) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) is different from false [2024-12-01 23:17:46,591 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1539 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1540 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1538 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1539) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1538) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1540) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) is different from false [2024-12-01 23:17:46,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:46,604 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 71 treesize of output 64 [2024-12-01 23:17:46,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:46,614 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 48 [2024-12-01 23:17:46,619 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 80 treesize of output 68 [2024-12-01 23:17:46,623 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 246 treesize of output 218 [2024-12-01 23:17:46,627 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 66 treesize of output 58 [2024-12-01 23:17:46,634 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 32 treesize of output 28 [2024-12-01 23:17:46,641 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 28 treesize of output 24 [2024-12-01 23:17:47,183 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:17:47,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429037320] [2024-12-01 23:17:47,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429037320] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:17:47,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [234938547] [2024-12-01 23:17:47,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:17:47,183 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-01 23:17:47,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-01 23:17:47,185 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-01 23:17:47,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-12-01 23:17:47,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:17:47,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 87 conjuncts are in the unsatisfiable core [2024-12-01 23:17:47,691 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:17:47,779 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 [2024-12-01 23:17:48,270 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:17:48,271 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 [2024-12-01 23:17:48,482 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 [2024-12-01 23:17:48,719 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 [2024-12-01 23:17:49,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 42 [2024-12-01 23:17:49,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 11 [2024-12-01 23:17:49,996 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 [2024-12-01 23:17:50,003 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 25 treesize of output 13 [2024-12-01 23:17:50,012 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 [2024-12-01 23:17:52,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:17:52,075 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 19 treesize of output 19 [2024-12-01 23:17:53,049 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 [2024-12-01 23:17:53,057 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 [2024-12-01 23:17:53,072 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-01 23:17:53,072 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:17:58,001 INFO L349 Elim1Store]: treesize reduction 4, result has 87.5 percent of original size [2024-12-01 23:17:58,001 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 231 treesize of output 187 [2024-12-01 23:18:02,839 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:02,839 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 190 treesize of output 185 [2024-12-01 23:18:03,544 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|)) (.cse1 (bvadd |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| (_ bv4 32)))) (let ((.cse0 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|)) (.cse7 (bvadd |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| (_ bv8 32))) (.cse9 (forall ((v_ArrVal_1601 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1601) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_main_~s~0#1.base|) (not (= v_ArrVal_1601 (store .cse3 .cse1 (select v_ArrVal_1601 .cse1)))))))) (and (or (forall ((v_ArrVal_1600 (_ BitVec 32))) (= (_ bv0 32) (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)))) (forall ((v_ArrVal_1601 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1601) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (or (= .cse2 |c_ULTIMATE.start_main_~s~0#1.base|) (= |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| .cse2) (not (= v_ArrVal_1601 (store .cse3 .cse1 (select v_ArrVal_1601 .cse1)))))))) (or (forall ((v_ArrVal_1600 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (or (= |c_ULTIMATE.start_main_~s~0#1.offset| .cse4) (= (_ bv0 32) (bvadd (_ bv4 32) .cse4))))) (forall ((v_ArrVal_1601 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1601) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (not (= v_ArrVal_1601 (store .cse3 .cse1 (select v_ArrVal_1601 .cse1))))))) (forall ((v_ArrVal_1600 (_ BitVec 32))) (let ((.cse5 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (or (bvule .cse5 (bvadd (_ bv4 32) .cse5)) (= |c_ULTIMATE.start_main_~s~0#1.offset| .cse5)))) (forall ((v_ArrVal_1600 (_ BitVec 32))) (let ((.cse6 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (or (bvule (bvadd (_ bv4 32) .cse6) .cse7) (= |c_ULTIMATE.start_main_~s~0#1.offset| .cse6)))) (or (forall ((v_ArrVal_1600 (_ BitVec 32))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse8 (bvadd (_ bv4 32) .cse8)))) .cse9) (or (forall ((v_ArrVal_1600 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) .cse7)) .cse9)))) is different from false [2024-12-01 23:18:03,900 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base|)) (.cse1 (bvadd (_ bv4 32) |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.offset|))) (let ((.cse3 (forall ((v_ArrVal_1601 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= |c_ULTIMATE.start_main_~s~0#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1601) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (not (= (store .cse5 .cse1 (select v_ArrVal_1601 .cse1)) v_ArrVal_1601))))) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.offset|)) (.cse0 (select |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base|))) (and (or (forall ((v_ArrVal_1600 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) .cse2)) .cse3) (or (forall ((v_ArrVal_1600 (_ BitVec 32))) (let ((.cse4 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (or (= |c_ULTIMATE.start_main_~s~0#1.offset| .cse4) (= (bvadd (_ bv4 32) .cse4) (_ bv0 32))))) (forall ((v_ArrVal_1601 (Array (_ BitVec 32) (_ BitVec 32)))) (or (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1601) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base|) (not (= (store .cse5 .cse1 (select v_ArrVal_1601 .cse1)) v_ArrVal_1601))))) (forall ((v_ArrVal_1600 (_ BitVec 32))) (let ((.cse6 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (or (= |c_ULTIMATE.start_main_~s~0#1.offset| .cse6) (bvule .cse6 (bvadd (_ bv4 32) .cse6))))) (or .cse3 (forall ((v_ArrVal_1600 (_ BitVec 32))) (let ((.cse7 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (bvule .cse7 (bvadd (_ bv4 32) .cse7))))) (forall ((v_ArrVal_1600 (_ BitVec 32))) (let ((.cse8 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (or (= |c_ULTIMATE.start_main_~s~0#1.offset| .cse8) (bvule (bvadd (_ bv4 32) .cse8) .cse2)))) (or (forall ((v_ArrVal_1600 (_ BitVec 32))) (= (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| (store .cse0 .cse1 v_ArrVal_1600)) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|)) (_ bv0 32))) (forall ((v_ArrVal_1601 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1601) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|))) (or (= |c_ULTIMATE.start_main_~s~0#1.base| .cse9) (= .cse9 |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base|) (not (= (store .cse5 .cse1 (select v_ArrVal_1601 .cse1)) v_ArrVal_1601))))))))) is different from false [2024-12-01 23:18:04,052 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:04,052 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 125 treesize of output 131 [2024-12-01 23:18:04,081 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 [2024-12-01 23:18:04,162 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 34 treesize of output 32 [2024-12-01 23:18:04,216 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:04,216 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 118 treesize of output 102 [2024-12-01 23:18:04,453 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:04,453 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 94 treesize of output 108 [2024-12-01 23:18:04,484 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 [2024-12-01 23:18:04,559 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 30 treesize of output 28 [2024-12-01 23:18:04,598 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:04,599 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 90 treesize of output 84 [2024-12-01 23:18:04,842 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:04,842 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 125 treesize of output 129 [2024-12-01 23:18:05,007 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 67 treesize of output 61 [2024-12-01 23:18:05,076 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 13 treesize of output 9 [2024-12-01 23:18:05,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:05,098 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 99 treesize of output 85 [2024-12-01 23:18:05,277 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:05,278 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 114 treesize of output 124 [2024-12-01 23:18:05,402 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 [2024-12-01 23:18:05,432 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 30 treesize of output 28 [2024-12-01 23:18:05,462 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:05,462 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 103 treesize of output 95 [2024-12-01 23:18:05,598 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 87 treesize of output 63 [2024-12-01 23:18:05,632 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 67 treesize of output 51 [2024-12-01 23:18:11,874 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1599 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1599) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (forall ((v_ArrVal_1599 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1599) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_1599 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1599) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1))))) is different from false [2024-12-01 23:18:11,925 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1599 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1599) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_1599 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1599) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|))) (bvule .cse1 (bvadd (_ bv4 32) .cse1)))) (forall ((v_ArrVal_1599 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1599) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|)))) is different from false [2024-12-01 23:18:11,939 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:11,939 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 37 treesize of output 30 [2024-12-01 23:18:11,942 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 44 treesize of output 32 [2024-12-01 23:18:11,957 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 [2024-12-01 23:18:11,971 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:11,971 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 21 treesize of output 22 [2024-12-01 23:18:11,974 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:18:11,977 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 19 treesize of output 11 [2024-12-01 23:18:11,996 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:11,996 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 1 case distinctions, treesize of input 35 treesize of output 28 [2024-12-01 23:18:11,999 INFO L173 IndexEqualityManager]: detected equality via solver [2024-12-01 23:18:12,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2024-12-01 23:18:13,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [234938547] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:18:13,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:18:13,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 37] total 58 [2024-12-01 23:18:13,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183910521] [2024-12-01 23:18:13,443 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:18:13,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2024-12-01 23:18:13,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:18:13,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2024-12-01 23:18:13,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=673, Invalid=8410, Unknown=77, NotChecked=1970, Total=11130 [2024-12-01 23:18:13,450 INFO L87 Difference]: Start difference. First operand 80 states and 84 transitions. Second operand has 59 states, 57 states have (on average 1.912280701754386) internal successors, (109), 54 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-01 23:18:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:18:21,666 INFO L93 Difference]: Finished difference Result 82 states and 85 transitions. [2024-12-01 23:18:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-01 23:18:21,666 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 57 states have (on average 1.912280701754386) internal successors, (109), 54 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 66 [2024-12-01 23:18:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:18:21,667 INFO L225 Difference]: With dead ends: 82 [2024-12-01 23:18:21,667 INFO L226 Difference]: Without dead ends: 82 [2024-12-01 23:18:21,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 10 IntricatePredicates, 1 DeprecatedPredicates, 3999 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=1187, Invalid=14026, Unknown=79, NotChecked=2530, Total=17822 [2024-12-01 23:18:21,669 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 133 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-12-01 23:18:21,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 925 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-12-01 23:18:21,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-12-01 23:18:21,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-12-01 23:18:21,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 72 states have (on average 1.125) internal successors, (81), 78 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:18:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 85 transitions. [2024-12-01 23:18:21,671 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 85 transitions. Word has length 66 [2024-12-01 23:18:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:18:21,671 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 85 transitions. [2024-12-01 23:18:21,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 57 states have (on average 1.912280701754386) internal successors, (109), 54 states have internal predecessors, (109), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-01 23:18:21,671 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 85 transitions. [2024-12-01 23:18:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-01 23:18:21,672 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:18:21,672 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:18:21,683 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-12-01 23:18:21,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-12-01 23:18:22,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-01 23:18:22,072 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:18:22,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:18:22,073 INFO L85 PathProgramCache]: Analyzing trace with hash -306703941, now seen corresponding path program 1 times [2024-12-01 23:18:22,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:18:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258106346] [2024-12-01 23:18:22,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:18:22,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:18:22,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:18:22,074 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:18:22,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-12-01 23:18:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:18:22,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-01 23:18:22,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:18:22,680 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 8 treesize of output 1 [2024-12-01 23:18:22,684 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 [2024-12-01 23:18:23,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:23,045 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 25 treesize of output 27 [2024-12-01 23:18:23,500 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 17 [2024-12-01 23:18:23,504 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 21 treesize of output 13 [2024-12-01 23:18:23,643 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-01 23:18:23,644 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:18:24,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:24,484 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 27 treesize of output 30 [2024-12-01 23:18:24,997 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 89 treesize of output 81 [2024-12-01 23:18:25,025 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:25,025 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 93 [2024-12-01 23:18:25,030 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 113 treesize of output 105 [2024-12-01 23:18:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-01 23:18:25,437 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:18:25,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258106346] [2024-12-01 23:18:25,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258106346] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:18:25,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:18:25,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 17] total 39 [2024-12-01 23:18:25,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056948333] [2024-12-01 23:18:25,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:18:25,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-12-01 23:18:25,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:18:25,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-12-01 23:18:25,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1364, Unknown=0, NotChecked=0, Total=1482 [2024-12-01 23:18:25,438 INFO L87 Difference]: Start difference. First operand 82 states and 85 transitions. Second operand has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:18:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:18:28,916 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2024-12-01 23:18:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-01 23:18:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2024-12-01 23:18:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:18:28,917 INFO L225 Difference]: With dead ends: 79 [2024-12-01 23:18:28,917 INFO L226 Difference]: Without dead ends: 79 [2024-12-01 23:18:28,918 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=276, Invalid=2586, Unknown=0, NotChecked=0, Total=2862 [2024-12-01 23:18:28,918 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 94 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-12-01 23:18:28,918 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 611 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-12-01 23:18:28,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-12-01 23:18:28,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-12-01 23:18:28,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 69 states have (on average 1.1014492753623188) internal successors, (76), 75 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:18:28,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2024-12-01 23:18:28,923 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 67 [2024-12-01 23:18:28,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:18:28,923 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2024-12-01 23:18:28,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.8461538461538463) internal successors, (111), 38 states have internal predecessors, (111), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-01 23:18:28,923 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2024-12-01 23:18:28,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-01 23:18:28,924 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:18:28,924 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:18:28,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-12-01 23:18:29,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:18:29,124 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:18:29,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:18:29,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1607984508, now seen corresponding path program 1 times [2024-12-01 23:18:29,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:18:29,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114262485] [2024-12-01 23:18:29,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:18:29,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:18:29,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:18:29,126 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:18:29,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-12-01 23:18:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:18:29,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-12-01 23:18:29,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:18:29,463 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 [2024-12-01 23:18:29,598 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:18:29,598 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 [2024-12-01 23:18:29,706 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 [2024-12-01 23:18:29,874 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:18:29,875 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 32 treesize of output 31 [2024-12-01 23:18:30,411 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:18:30,411 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 32 treesize of output 31 [2024-12-01 23:18:30,465 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 35 treesize of output 15 [2024-12-01 23:18:30,694 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 23 treesize of output 11 [2024-12-01 23:18:30,841 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-12-01 23:18:30,841 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:18:31,097 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1718 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (let ((.cse0 (bvadd |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| (_ bv4 32)))) (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 (select v_ArrVal_1718 .cse0))) v_ArrVal_1718)) (bvult (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1718) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_#StackHeapBarrier|))) is different from false [2024-12-01 23:18:31,135 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1717 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1717) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:31,150 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1717 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_#t~mem12#1.base| v_ArrVal_1717) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:31,318 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1717 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_1717) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:31,332 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1717 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_1717) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:31,341 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1717 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1717) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:31,356 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1717 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1716 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1716))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1717)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:31,377 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1717 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1716 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1716))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1717)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:31,388 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:31,388 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 36 treesize of output 29 [2024-12-01 23:18:31,392 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 236 treesize of output 200 [2024-12-01 23:18:31,400 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 155 treesize of output 147 [2024-12-01 23:18:31,403 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 147 treesize of output 135 [2024-12-01 23:18:31,804 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:18:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114262485] [2024-12-01 23:18:31,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114262485] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:18:31,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2026842448] [2024-12-01 23:18:31,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:18:31,804 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-01 23:18:31,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-01 23:18:31,806 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-01 23:18:31,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-12-01 23:18:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:18:32,296 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-12-01 23:18:32,300 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:18:32,305 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 [2024-12-01 23:18:32,378 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 [2024-12-01 23:18:32,629 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:18:32,629 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 [2024-12-01 23:18:32,873 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 [2024-12-01 23:18:33,179 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:18:33,179 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 32 treesize of output 31 [2024-12-01 23:18:34,046 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-01 23:18:34,047 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 32 treesize of output 31 [2024-12-01 23:18:34,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2024-12-01 23:18:34,845 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 23 treesize of output 11 [2024-12-01 23:18:34,865 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-12-01 23:18:34,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:18:35,001 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1775 (Array (_ BitVec 32) (_ BitVec 32)))) (or (bvult (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base| v_ArrVal_1775) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_#StackHeapBarrier|) (not (= (let ((.cse0 (bvadd |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset| (_ bv4 32)))) (store (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) .cse0 (select v_ArrVal_1775 .cse0))) v_ArrVal_1775)))) is different from false [2024-12-01 23:18:35,488 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1774 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_update_at_~head#1.base|) |c_ULTIMATE.start_sll_circular_update_at_~head#1.offset|) v_ArrVal_1774) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:35,504 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1774 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) v_ArrVal_1774) |c_ULTIMATE.start_main_~s~0#1.base|) |c_ULTIMATE.start_main_~s~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:35,519 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1774 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) v_ArrVal_1774) |c_ULTIMATE.start_sll_circular_create_#res#1.base|) |c_ULTIMATE.start_sll_circular_create_#res#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:35,530 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1774 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1774) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:35,542 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1774 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1773))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) v_ArrVal_1774)) |c_ULTIMATE.start_sll_circular_create_~head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~head~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:35,561 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1774 (Array (_ BitVec 32) (_ BitVec 32)))) (bvult (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_sll_circular_create_~last~0#1.base| v_ArrVal_1773))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) v_ArrVal_1774)) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.base|) |c_ULTIMATE.start_sll_circular_create_~new_head~0#1.offset|) |c_#StackHeapBarrier|)) is different from false [2024-12-01 23:18:35,573 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:35,573 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 36 treesize of output 29 [2024-12-01 23:18:35,576 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 236 treesize of output 200 [2024-12-01 23:18:35,591 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 155 treesize of output 147 [2024-12-01 23:18:35,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 135 [2024-12-01 23:18:35,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2026842448] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:18:35,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-01 23:18:35,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 23] total 37 [2024-12-01 23:18:35,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481486706] [2024-12-01 23:18:35,916 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-01 23:18:35,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-12-01 23:18:35,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-01 23:18:35,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-12-01 23:18:35,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1895, Unknown=63, NotChecked=1530, Total=3660 [2024-12-01 23:18:35,917 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand has 38 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 34 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:18:39,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:18:39,066 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2024-12-01 23:18:39,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-01 23:18:39,067 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 34 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 69 [2024-12-01 23:18:39,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:18:39,067 INFO L225 Difference]: With dead ends: 87 [2024-12-01 23:18:39,067 INFO L226 Difference]: Without dead ends: 87 [2024-12-01 23:18:39,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 175 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 517 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=195, Invalid=2252, Unknown=63, NotChecked=1650, Total=4160 [2024-12-01 23:18:39,068 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 20 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-01 23:18:39,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 815 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-01 23:18:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-12-01 23:18:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-12-01 23:18:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 76 states have (on average 1.0921052631578947) internal successors, (83), 82 states have internal predecessors, (83), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-01 23:18:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2024-12-01 23:18:39,073 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 69 [2024-12-01 23:18:39,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:18:39,073 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2024-12-01 23:18:39,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.6486486486486487) internal successors, (98), 34 states have internal predecessors, (98), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-12-01 23:18:39,073 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2024-12-01 23:18:39,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-01 23:18:39,074 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:18:39,074 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:18:39,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2024-12-01 23:18:39,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-12-01 23:18:39,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:18:39,475 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 25 more)] === [2024-12-01 23:18:39,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:18:39,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1696384010, now seen corresponding path program 1 times [2024-12-01 23:18:39,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-01 23:18:39,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950474907] [2024-12-01 23:18:39,475 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:18:39,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:18:39,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:18:39,477 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:18:39,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-12-01 23:18:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:18:39,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 73 conjuncts are in the unsatisfiable core [2024-12-01 23:18:39,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:18:39,976 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-01 23:18:39,976 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 [2024-12-01 23:18:40,130 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 [2024-12-01 23:18:40,151 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 [2024-12-01 23:18:40,335 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-12-01 23:18:40,335 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 47 treesize of output 33 [2024-12-01 23:18:40,344 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 22 [2024-12-01 23:18:41,091 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-01 23:18:41,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 58 [2024-12-01 23:18:41,098 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 46 treesize of output 25 [2024-12-01 23:18:41,225 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 0 case distinctions, treesize of input 27 treesize of output 20 [2024-12-01 23:18:41,233 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-12-01 23:18:41,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 32 [2024-12-01 23:18:42,075 INFO L349 Elim1Store]: treesize reduction 21, result has 27.6 percent of original size [2024-12-01 23:18:42,075 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 53 treesize of output 36 [2024-12-01 23:18:42,099 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:18:42,099 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 15 [2024-12-01 23:18:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-12-01 23:18:42,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:19:07,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-12-01 23:19:07,729 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-12-01 23:19:07,730 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-01 23:19:07,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950474907] [2024-12-01 23:19:07,730 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-12-01 23:19:07,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-12-01 23:19:07,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:19:07,931 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_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/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.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:912) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) 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.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) 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:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) 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) ... 45 more [2024-12-01 23:19:07,935 INFO L158 Benchmark]: Toolchain (without parser) took 187080.36ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 68.5MB in the beginning and 56.7MB in the end (delta: 11.8MB). Peak memory consumption was 71.1MB. Max. memory is 16.1GB. [2024-12-01 23:19:07,935 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 48.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:19:07,935 INFO L158 Benchmark]: CACSL2BoogieTranslator took 353.14ms. Allocated memory is still 92.3MB. Free memory was 68.3MB in the beginning and 49.9MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-01 23:19:07,935 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.33ms. Allocated memory is still 92.3MB. Free memory was 49.8MB in the beginning and 47.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:19:07,935 INFO L158 Benchmark]: Boogie Preprocessor took 48.03ms. Allocated memory is still 92.3MB. Free memory was 47.8MB in the beginning and 45.0MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 23:19:07,935 INFO L158 Benchmark]: RCFGBuilder took 489.41ms. Allocated memory is still 92.3MB. Free memory was 45.0MB in the beginning and 50.5MB in the end (delta: -5.5MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2024-12-01 23:19:07,936 INFO L158 Benchmark]: TraceAbstraction took 186150.09ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 49.8MB in the beginning and 56.7MB in the end (delta: -6.9MB). Peak memory consumption was 50.0MB. Max. memory is 16.1GB. [2024-12-01 23:19:07,936 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 83.9MB. Free memory is still 48.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 353.14ms. Allocated memory is still 92.3MB. Free memory was 68.3MB in the beginning and 49.9MB in the end (delta: 18.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.33ms. Allocated memory is still 92.3MB. Free memory was 49.8MB in the beginning and 47.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.03ms. Allocated memory is still 92.3MB. Free memory was 47.8MB in the beginning and 45.0MB in the end (delta: 2.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 489.41ms. Allocated memory is still 92.3MB. Free memory was 45.0MB in the beginning and 50.5MB in the end (delta: -5.5MB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 186150.09ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 49.8MB in the beginning and 56.7MB in the end (delta: -6.9MB). Peak memory consumption was 50.0MB. 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_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/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_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/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 Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48878736-b5df-4f0b-99d3-434e2d6dcbb8/bin/uautomizer-verify-84ZbGMXZE1/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")