./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0219.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0219.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU --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 4a489d3e73f8fa53a32414f65b592ba5db703c103e5e16e188592c7c2dfeab95 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:07:41,549 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:07:41,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:07:41,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:07:41,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:07:41,721 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:07:41,721 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:07:41,722 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:07:41,722 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:07:41,724 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:07:41,724 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:07:41,725 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:07:41,726 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:07:41,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:07:41,731 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:07:41,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:07:41,732 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:07:41,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:07:41,733 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:07:41,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:07:41,733 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:07:41,734 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:07:41,734 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:07:41,737 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:07:41,737 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:07:41,738 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:07:41,738 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:07:41,738 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:07:41,738 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:07:41,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:07:41,739 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:07:41,739 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:07:41,739 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:07:41,740 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:41,740 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:07:41,740 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:07:41,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:07:41,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:07:41,742 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:07:41,743 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:07:41,743 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:07:41,743 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:07:41,744 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a489d3e73f8fa53a32414f65b592ba5db703c103e5e16e188592c7c2dfeab95 [2024-10-31 22:07:42,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:07:42,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:07:42,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:07:42,127 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:07:42,128 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:07:42,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/memsafety/test-0219.i Unable to find full path for "g++" [2024-10-31 22:07:44,103 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:07:44,402 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:07:44,403 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/sv-benchmarks/c/memsafety/test-0219.i [2024-10-31 22:07:44,422 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/data/4fb26585c/10de5dc6beb44040a78655552ff26a3c/FLAG718b1cbf7 [2024-10-31 22:07:44,443 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/data/4fb26585c/10de5dc6beb44040a78655552ff26a3c [2024-10-31 22:07:44,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:07:44,448 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:07:44,450 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:44,450 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:07:44,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:07:44,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:44" (1/1) ... [2024-10-31 22:07:44,460 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@114e4352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:44, skipping insertion in model container [2024-10-31 22:07:44,460 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:07:44" (1/1) ... [2024-10-31 22:07:44,523 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:07:45,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:45,013 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:07:45,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:07:45,104 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:07:45,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45 WrapperNode [2024-10-31 22:07:45,104 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:07:45,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:45,106 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:07:45,106 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:07:45,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,131 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,159 INFO L138 Inliner]: procedures = 180, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 117 [2024-10-31 22:07:45,159 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:07:45,160 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:07:45,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:07:45,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:07:45,174 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,174 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,180 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,212 INFO L175 MemorySlicer]: Split 22 memory accesses to 3 slices as follows [2, 12, 8]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 8 writes are split as follows [0, 6, 2]. [2024-10-31 22:07:45,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,213 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,227 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,231 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,234 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,235 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,239 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:07:45,240 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:07:45,240 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:07:45,240 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:07:45,241 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (1/1) ... [2024-10-31 22:07:45,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:07:45,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:45,285 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:07:45,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:07:45,366 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2024-10-31 22:07:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2024-10-31 22:07:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:07:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:07:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:07:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:07:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-31 22:07:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:07:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:07:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-31 22:07:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:07:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-31 22:07:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-31 22:07:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-31 22:07:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:07:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:07:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:07:45,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:07:45,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:07:45,542 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:07:45,544 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:07:45,997 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-10-31 22:07:45,997 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:07:46,020 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:07:46,022 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:07:46,023 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:07:46 BoogieIcfgContainer [2024-10-31 22:07:46,023 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:07:46,027 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:07:46,027 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:07:46,031 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:07:46,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:07:44" (1/3) ... [2024-10-31 22:07:46,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af7c3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:07:46, skipping insertion in model container [2024-10-31 22:07:46,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:07:45" (2/3) ... [2024-10-31 22:07:46,036 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af7c3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:07:46, skipping insertion in model container [2024-10-31 22:07:46,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:07:46" (3/3) ... [2024-10-31 22:07:46,038 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0219.i [2024-10-31 22:07:46,057 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:07:46,057 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-10-31 22:07:46,103 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:07:46,110 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;@402b3b08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:07:46,110 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-10-31 22:07:46,115 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 106 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) [2024-10-31 22:07:46,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-31 22:07:46,123 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:46,124 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-31 22:07:46,124 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-31 22:07:46,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1359048, now seen corresponding path program 1 times [2024-10-31 22:07:46,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:46,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961874447] [2024-10-31 22:07:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:46,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:46,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:46,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961874447] [2024-10-31 22:07:46,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961874447] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:46,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:46,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:07:46,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262923917] [2024-10-31 22:07:46,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:46,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:07:46,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:46,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:07:46,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:07:46,372 INFO L87 Difference]: Start difference. First operand has 110 states, 60 states have (on average 1.9666666666666666) internal successors, (118), 106 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) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:46,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:46,401 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2024-10-31 22:07:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:07:46,403 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-31 22:07:46,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:46,414 INFO L225 Difference]: With dead ends: 110 [2024-10-31 22:07:46,415 INFO L226 Difference]: Without dead ends: 108 [2024-10-31 22:07:46,417 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:07:46,423 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:46,424 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:07:46,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-10-31 22:07:46,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-10-31 22:07:46,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 59 states have (on average 1.847457627118644) internal successors, (109), 104 states have internal predecessors, (109), 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) [2024-10-31 22:07:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 113 transitions. [2024-10-31 22:07:46,480 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 113 transitions. Word has length 4 [2024-10-31 22:07:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:46,481 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 113 transitions. [2024-10-31 22:07:46,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:07:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 113 transitions. [2024-10-31 22:07:46,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-31 22:07:46,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:46,483 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-31 22:07:46,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:07:46,484 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-31 22:07:46,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:46,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1303851166, now seen corresponding path program 1 times [2024-10-31 22:07:46,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:46,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916331898] [2024-10-31 22:07:46,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:46,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:46,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:46,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916331898] [2024-10-31 22:07:46,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916331898] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:46,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:46,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:07:46,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19590076] [2024-10-31 22:07:46,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:46,712 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:07:46,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:46,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:07:46,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:07:46,716 INFO L87 Difference]: Start difference. First operand 108 states and 113 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) [2024-10-31 22:07:46,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:46,890 INFO L93 Difference]: Finished difference Result 107 states and 112 transitions. [2024-10-31 22:07:46,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:07:46,891 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 [2024-10-31 22:07:46,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:46,892 INFO L225 Difference]: With dead ends: 107 [2024-10-31 22:07:46,892 INFO L226 Difference]: Without dead ends: 107 [2024-10-31 22:07:46,892 INFO L431 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 [2024-10-31 22:07:46,894 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 4 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:46,894 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 168 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-31 22:07:46,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-10-31 22:07:46,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-10-31 22:07:46,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 103 states have internal predecessors, (108), 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) [2024-10-31 22:07:46,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2024-10-31 22:07:46,911 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 6 [2024-10-31 22:07:46,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:46,911 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2024-10-31 22:07:46,912 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) [2024-10-31 22:07:46,912 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2024-10-31 22:07:46,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:07:46,912 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:46,912 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:46,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:07:46,913 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-31 22:07:46,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1764680516, now seen corresponding path program 1 times [2024-10-31 22:07:46,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:46,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781668401] [2024-10-31 22:07:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:46,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-31 22:07:46,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1823222461] [2024-10-31 22:07:46,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:46,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:46,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:46,974 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:46,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:07:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:47,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-31 22:07:47,093 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:47,285 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 [2024-10-31 22:07:47,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:07:47,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:07:47,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:47,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781668401] [2024-10-31 22:07:47,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-31 22:07:47,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823222461] [2024-10-31 22:07:47,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823222461] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:47,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:07:47,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678578128] [2024-10-31 22:07:47,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:47,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:07:47,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:07:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:07:47,378 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-10-31 22:07:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:47,564 INFO L93 Difference]: Finished difference Result 106 states and 111 transitions. [2024-10-31 22:07:47,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:07:47,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2024-10-31 22:07:47,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:47,566 INFO L225 Difference]: With dead ends: 106 [2024-10-31 22:07:47,566 INFO L226 Difference]: Without dead ends: 106 [2024-10-31 22:07:47,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:07:47,570 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 9 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:47,572 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 271 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-31 22:07:47,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-10-31 22:07:47,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2024-10-31 22:07:47,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 59 states have (on average 1.8135593220338984) internal successors, (107), 102 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) [2024-10-31 22:07:47,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2024-10-31 22:07:47,588 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 7 [2024-10-31 22:07:47,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:47,589 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2024-10-31 22:07:47,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-10-31 22:07:47,592 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2024-10-31 22:07:47,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-31 22:07:47,593 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:47,594 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:47,619 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:07:47,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:47,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-31 22:07:47,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:47,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1861010544, now seen corresponding path program 1 times [2024-10-31 22:07:47,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:47,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349317570] [2024-10-31 22:07:47,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:47,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:48,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:07:48,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:48,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:07:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:48,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:07:48,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:48,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349317570] [2024-10-31 22:07:48,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349317570] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:48,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:48,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:07:48,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802038663] [2024-10-31 22:07:48,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:48,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:07:48,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:48,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:07:48,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:07:48,406 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-10-31 22:07:48,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:48,761 INFO L93 Difference]: Finished difference Result 103 states and 108 transitions. [2024-10-31 22:07:48,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:07:48,761 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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 26 [2024-10-31 22:07:48,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:48,762 INFO L225 Difference]: With dead ends: 103 [2024-10-31 22:07:48,762 INFO L226 Difference]: Without dead ends: 103 [2024-10-31 22:07:48,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:07:48,764 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 12 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:48,764 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 427 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-31 22:07:48,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-10-31 22:07:48,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2024-10-31 22:07:48,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 59 states have (on average 1.7627118644067796) internal successors, (104), 99 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) [2024-10-31 22:07:48,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 108 transitions. [2024-10-31 22:07:48,778 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 108 transitions. Word has length 26 [2024-10-31 22:07:48,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:48,782 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 108 transitions. [2024-10-31 22:07:48,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 6 states have internal predecessors, (22), 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) [2024-10-31 22:07:48,782 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 108 transitions. [2024-10-31 22:07:48,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-31 22:07:48,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:48,783 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:07:48,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:07:48,784 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-31 22:07:48,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:48,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1861010543, now seen corresponding path program 1 times [2024-10-31 22:07:48,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:48,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988358807] [2024-10-31 22:07:48,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:48,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-31 22:07:48,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [104548134] [2024-10-31 22:07:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:48,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:48,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:48,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:48,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:07:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:48,963 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-31 22:07:48,967 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:49,010 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 [2024-10-31 22:07:49,049 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 10 treesize of output 9 [2024-10-31 22:07:49,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-31 22:07:49,532 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 [2024-10-31 22:07:49,550 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:07:49,551 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 [2024-10-31 22:07:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:07:49,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:07:49,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:49,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988358807] [2024-10-31 22:07:49,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-31 22:07:49,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104548134] [2024-10-31 22:07:49,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104548134] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:49,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:49,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-31 22:07:49,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540038275] [2024-10-31 22:07:49,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:49,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-31 22:07:49,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:49,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-31 22:07:49,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-31 22:07:49,583 INFO L87 Difference]: Start difference. First operand 103 states and 108 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-10-31 22:07:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:50,306 INFO L93 Difference]: Finished difference Result 100 states and 105 transitions. [2024-10-31 22:07:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:07:50,307 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 26 [2024-10-31 22:07:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:50,308 INFO L225 Difference]: With dead ends: 100 [2024-10-31 22:07:50,308 INFO L226 Difference]: Without dead ends: 100 [2024-10-31 22:07:50,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-31 22:07:50,310 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 14 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:50,311 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 327 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:07:50,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-10-31 22:07:50,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-10-31 22:07:50,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 59 states have (on average 1.7118644067796611) internal successors, (101), 96 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) [2024-10-31 22:07:50,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2024-10-31 22:07:50,319 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 26 [2024-10-31 22:07:50,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:50,319 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2024-10-31 22:07:50,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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) [2024-10-31 22:07:50,320 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2024-10-31 22:07:50,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-31 22:07:50,321 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:50,321 INFO L215 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] [2024-10-31 22:07:50,350 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:07:50,525 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:50,526 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-31 22:07:50,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:50,526 INFO L85 PathProgramCache]: Analyzing trace with hash 384928723, now seen corresponding path program 1 times [2024-10-31 22:07:50,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:50,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977984989] [2024-10-31 22:07:50,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:50,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:50,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:50,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:07:50,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:50,971 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:07:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:51,142 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:07:51,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977984989] [2024-10-31 22:07:51,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977984989] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:51,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639123619] [2024-10-31 22:07:51,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:51,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:51,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:51,146 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:51,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:07:51,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:51,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-31 22:07:51,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:51,325 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 [2024-10-31 22:07:51,417 WARN L873 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| Int)) (and (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) 0) (= |c_#valid| (store |c_old(#valid)| |calloc_model_~ptr~0#1.base| (select |c_#valid| |calloc_model_~ptr~0#1.base|))))) is different from true [2024-10-31 22:07:51,515 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-31 22:07:51,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-31 22:07:51,546 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-31 22:07:51,546 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 [2024-10-31 22:07:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-10-31 22:07:51,581 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:07:51,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639123619] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:51,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-31 22:07:51,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2024-10-31 22:07:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429328154] [2024-10-31 22:07:51,711 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-31 22:07:51,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-31 22:07:51,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:51,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-31 22:07:51,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2024-10-31 22:07:51,713 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:07:52,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:52,333 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2024-10-31 22:07:52,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-31 22:07:52,335 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-10-31 22:07:52,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:52,337 INFO L225 Difference]: With dead ends: 101 [2024-10-31 22:07:52,338 INFO L226 Difference]: Without dead ends: 101 [2024-10-31 22:07:52,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=281, Unknown=1, NotChecked=34, Total=380 [2024-10-31 22:07:52,339 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 31 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:52,340 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 527 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 424 Invalid, 0 Unknown, 102 Unchecked, 0.4s Time] [2024-10-31 22:07:52,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-31 22:07:52,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2024-10-31 22:07:52,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 59 states have (on average 1.6610169491525424) internal successors, (98), 93 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) [2024-10-31 22:07:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2024-10-31 22:07:52,348 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 30 [2024-10-31 22:07:52,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:52,349 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2024-10-31 22:07:52,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 11 states have internal predecessors, (37), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:07:52,349 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2024-10-31 22:07:52,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-31 22:07:52,350 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:52,350 INFO L215 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] [2024-10-31 22:07:52,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:07:52,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-31 22:07:52,555 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-31 22:07:52,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:52,555 INFO L85 PathProgramCache]: Analyzing trace with hash 384928724, now seen corresponding path program 1 times [2024-10-31 22:07:52,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:52,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116235848] [2024-10-31 22:07:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:52,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:53,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:07:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:53,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:07:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:53,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:07:53,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:53,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116235848] [2024-10-31 22:07:53,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116235848] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:07:53,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:07:53,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-31 22:07:53,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125015251] [2024-10-31 22:07:53,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:07:53,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:07:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:07:53,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:07:53,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:07:53,417 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 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) [2024-10-31 22:07:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:07:53,997 INFO L93 Difference]: Finished difference Result 105 states and 111 transitions. [2024-10-31 22:07:53,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:07:53,998 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 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 30 [2024-10-31 22:07:53,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:07:53,999 INFO L225 Difference]: With dead ends: 105 [2024-10-31 22:07:53,999 INFO L226 Difference]: Without dead ends: 101 [2024-10-31 22:07:54,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:07:54,001 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 4 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-31 22:07:54,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 444 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 467 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-31 22:07:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-31 22:07:54,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2024-10-31 22:07:54,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.6451612903225807) internal successors, (102), 97 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-31 22:07:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 107 transitions. [2024-10-31 22:07:54,009 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 107 transitions. Word has length 30 [2024-10-31 22:07:54,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:07:54,009 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 107 transitions. [2024-10-31 22:07:54,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 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) [2024-10-31 22:07:54,010 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 107 transitions. [2024-10-31 22:07:54,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-31 22:07:54,011 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:07:54,011 INFO L215 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] [2024-10-31 22:07:54,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:07:54,012 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-31 22:07:54,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:07:54,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1169041418, now seen corresponding path program 1 times [2024-10-31 22:07:54,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:07:54,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501406193] [2024-10-31 22:07:54,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:54,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:07:54,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:54,613 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-10-31 22:07:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:54,624 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-10-31 22:07:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:55,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:07:55,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:07:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501406193] [2024-10-31 22:07:55,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501406193] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:07:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249812165] [2024-10-31 22:07:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:07:55,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:07:55,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:07:55,116 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:07:55,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dbba0b0-801b-4f05-8000-215f224862dd/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:07:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:07:55,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-10-31 22:07:55,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:07:55,351 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 [2024-10-31 22:07:55,373 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 [2024-10-31 22:08:01,212 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-31 22:08:01,212 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 [2024-10-31 22:08:01,228 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 [2024-10-31 22:08:01,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-31 22:08:01,296 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 [2024-10-31 22:08:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:08:01,302 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:08:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:08:18,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249812165] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:08:18,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:08:18,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 28 [2024-10-31 22:08:18,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096618300] [2024-10-31 22:08:18,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:08:18,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-10-31 22:08:18,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:08:18,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-10-31 22:08:18,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=650, Unknown=5, NotChecked=0, Total=756 [2024-10-31 22:08:18,887 INFO L87 Difference]: Start difference. First operand 101 states and 107 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 24 states have internal predecessors, (50), 1 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4)