./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/forester-heap/sll-buckets-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-buckets-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI --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 c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:01:19,223 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:01:19,340 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:01:19,347 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:01:19,348 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:01:19,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:01:19,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:01:19,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:01:19,388 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:01:19,394 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:01:19,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:01:19,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:01:19,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:01:19,398 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:01:19,398 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:01:19,399 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:01:19,399 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:01:19,400 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:01:19,400 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:01:19,401 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:01:19,401 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:01:19,402 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:01:19,402 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:01:19,403 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:01:19,403 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:01:19,403 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:01:19,404 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:01:19,404 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:01:19,405 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:01:19,405 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:01:19,407 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:01:19,407 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:01:19,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:01:19,408 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:01:19,408 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:01:19,408 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:01:19,408 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:01:19,409 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:01:19,409 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:01:19,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:01:19,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:01:19,410 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_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6b726a83620fff2a21a6dbfdec50e244c1786dd86dd76b1719515a59b3627ac [2023-11-24 22:01:19,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:01:19,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:01:19,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:01:19,800 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:01:19,800 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:01:19,802 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/forester-heap/sll-buckets-1.i [2023-11-24 22:01:22,859 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:01:23,143 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:01:23,144 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/sv-benchmarks/c/forester-heap/sll-buckets-1.i [2023-11-24 22:01:23,157 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/data/1755a5be2/befbc4b0e8f54dedb6de503e0469ba2c/FLAG3759a7225 [2023-11-24 22:01:23,174 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/data/1755a5be2/befbc4b0e8f54dedb6de503e0469ba2c [2023-11-24 22:01:23,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:01:23,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:01:23,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:01:23,180 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:01:23,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:01:23,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f70c530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23, skipping insertion in model container [2023-11-24 22:01:23,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,236 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:01:23,588 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:01:23,598 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:01:23,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:01:23,691 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:01:23,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23 WrapperNode [2023-11-24 22:01:23,691 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:01:23,693 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:01:23,693 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:01:23,693 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:01:23,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,726 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,764 INFO L138 Inliner]: procedures = 119, calls = 47, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 163 [2023-11-24 22:01:23,764 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:01:23,765 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:01:23,765 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:01:23,765 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:01:23,777 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,805 INFO L175 MemorySlicer]: Split 32 memory accesses to 2 slices as follows [2, 30]. 94 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 16 writes are split as follows [0, 16]. [2023-11-24 22:01:23,805 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,805 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,816 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,821 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,823 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,829 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:01:23,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:01:23,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:01:23,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:01:23,832 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (1/1) ... [2023-11-24 22:01:23,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:01:23,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:01:23,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:01:23,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:01:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 22:01:23,908 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 22:01:23,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 22:01:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 22:01:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:01:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:01:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:01:23,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:01:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 22:01:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 22:01:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 22:01:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 22:01:23,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:01:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:01:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:01:23,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:01:23,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:01:24,082 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:01:24,085 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:01:24,634 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:01:24,721 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:01:24,722 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-24 22:01:24,723 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:01:24 BoogieIcfgContainer [2023-11-24 22:01:24,723 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:01:24,727 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:01:24,727 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:01:24,731 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:01:24,732 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:01:23" (1/3) ... [2023-11-24 22:01:24,733 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624543b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:01:24, skipping insertion in model container [2023-11-24 22:01:24,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:01:23" (2/3) ... [2023-11-24 22:01:24,736 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@624543b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:01:24, skipping insertion in model container [2023-11-24 22:01:24,736 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:01:24" (3/3) ... [2023-11-24 22:01:24,738 INFO L112 eAbstractionObserver]: Analyzing ICFG sll-buckets-1.i [2023-11-24 22:01:24,758 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:01:24,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 68 error locations. [2023-11-24 22:01:24,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:01:24,814 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@682cfc9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:01:24,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2023-11-24 22:01:24,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 144 states, 69 states have (on average 2.4057971014492754) internal successors, (166), 137 states have internal predecessors, (166), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-24 22:01:24,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 22:01:24,823 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:24,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 22:01:24,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:24,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:24,829 INFO L85 PathProgramCache]: Analyzing trace with hash 10956, now seen corresponding path program 1 times [2023-11-24 22:01:24,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:24,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072010364] [2023-11-24 22:01:24,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:24,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:25,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:25,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:25,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072010364] [2023-11-24 22:01:25,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072010364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:25,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:25,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:01:25,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883739892] [2023-11-24 22:01:25,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:25,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:25,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:25,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:25,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:25,085 INFO L87 Difference]: Start difference. First operand has 144 states, 69 states have (on average 2.4057971014492754) internal successors, (166), 137 states have internal predecessors, (166), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:25,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:25,334 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2023-11-24 22:01:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:25,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-24 22:01:25,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:25,351 INFO L225 Difference]: With dead ends: 166 [2023-11-24 22:01:25,351 INFO L226 Difference]: Without dead ends: 165 [2023-11-24 22:01:25,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:25,359 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 121 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:25,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 102 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:01:25,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-24 22:01:25,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 132. [2023-11-24 22:01:25,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 63 states have (on average 2.1904761904761907) internal successors, (138), 130 states have internal predecessors, (138), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 143 transitions. [2023-11-24 22:01:25,417 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 143 transitions. Word has length 2 [2023-11-24 22:01:25,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:25,418 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 143 transitions. [2023-11-24 22:01:25,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:25,418 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 143 transitions. [2023-11-24 22:01:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-24 22:01:25,419 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:25,419 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-24 22:01:25,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:01:25,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:25,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:25,420 INFO L85 PathProgramCache]: Analyzing trace with hash 10957, now seen corresponding path program 1 times [2023-11-24 22:01:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:25,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365053235] [2023-11-24 22:01:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:25,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:25,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:25,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:25,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365053235] [2023-11-24 22:01:25,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365053235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:25,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:25,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:01:25,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862029467] [2023-11-24 22:01:25,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:25,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:25,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:25,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:25,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:25,545 INFO L87 Difference]: Start difference. First operand 132 states and 143 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:25,736 INFO L93 Difference]: Finished difference Result 164 states and 179 transitions. [2023-11-24 22:01:25,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:25,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2023-11-24 22:01:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:25,741 INFO L225 Difference]: With dead ends: 164 [2023-11-24 22:01:25,742 INFO L226 Difference]: Without dead ends: 164 [2023-11-24 22:01:25,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:25,746 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 59 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:25,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 166 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:01:25,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-11-24 22:01:25,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 128. [2023-11-24 22:01:25,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 63 states have (on average 2.126984126984127) internal successors, (134), 126 states have internal predecessors, (134), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:25,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 139 transitions. [2023-11-24 22:01:25,772 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 139 transitions. Word has length 2 [2023-11-24 22:01:25,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:25,772 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 139 transitions. [2023-11-24 22:01:25,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:25,773 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 139 transitions. [2023-11-24 22:01:25,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 22:01:25,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:25,773 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 22:01:25,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:01:25,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:25,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:25,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1537122341, now seen corresponding path program 1 times [2023-11-24 22:01:25,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:25,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246661637] [2023-11-24 22:01:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:25,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:25,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:26,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:26,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246661637] [2023-11-24 22:01:26,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246661637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:26,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:26,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:01:26,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3619157] [2023-11-24 22:01:26,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:26,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:01:26,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:26,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:01:26,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:01:26,022 INFO L87 Difference]: Start difference. First operand 128 states and 139 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:26,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:26,305 INFO L93 Difference]: Finished difference Result 132 states and 145 transitions. [2023-11-24 22:01:26,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:01:26,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 22:01:26,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:26,307 INFO L225 Difference]: With dead ends: 132 [2023-11-24 22:01:26,308 INFO L226 Difference]: Without dead ends: 132 [2023-11-24 22:01:26,308 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:01:26,310 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 83 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:26,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 199 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 22:01:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-24 22:01:26,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2023-11-24 22:01:26,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 71 states have (on average 1.9577464788732395) internal successors, (139), 123 states have internal predecessors, (139), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2023-11-24 22:01:26,320 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 6 [2023-11-24 22:01:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:26,321 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2023-11-24 22:01:26,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2023-11-24 22:01:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 22:01:26,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:26,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 22:01:26,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:01:26,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:26,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:26,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1537122342, now seen corresponding path program 1 times [2023-11-24 22:01:26,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:26,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055398891] [2023-11-24 22:01:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:26,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:26,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:26,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055398891] [2023-11-24 22:01:26,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055398891] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:26,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:26,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:01:26,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958360913] [2023-11-24 22:01:26,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:26,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:01:26,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:01:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:01:26,575 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:26,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:26,805 INFO L93 Difference]: Finished difference Result 121 states and 140 transitions. [2023-11-24 22:01:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:01:26,806 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 22:01:26,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:26,807 INFO L225 Difference]: With dead ends: 121 [2023-11-24 22:01:26,807 INFO L226 Difference]: Without dead ends: 121 [2023-11-24 22:01:26,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:01:26,809 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 3 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:26,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 295 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:01:26,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-24 22:01:26,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-24 22:01:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 71 states have (on average 1.9014084507042253) internal successors, (135), 119 states have internal predecessors, (135), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 140 transitions. [2023-11-24 22:01:26,817 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 140 transitions. Word has length 6 [2023-11-24 22:01:26,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:26,818 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 140 transitions. [2023-11-24 22:01:26,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:26,818 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 140 transitions. [2023-11-24 22:01:26,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:01:26,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:26,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:26,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:01:26,820 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:26,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:26,820 INFO L85 PathProgramCache]: Analyzing trace with hash 769396375, now seen corresponding path program 1 times [2023-11-24 22:01:26,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:26,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088346495] [2023-11-24 22:01:26,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:26,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:26,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:26,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088346495] [2023-11-24 22:01:26,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088346495] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:26,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:26,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:01:26,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799037899] [2023-11-24 22:01:26,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:26,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:01:26,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:26,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:01:26,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:01:26,970 INFO L87 Difference]: Start difference. First operand 121 states and 140 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:27,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:27,193 INFO L93 Difference]: Finished difference Result 127 states and 140 transitions. [2023-11-24 22:01:27,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:01:27,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-24 22:01:27,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:27,195 INFO L225 Difference]: With dead ends: 127 [2023-11-24 22:01:27,195 INFO L226 Difference]: Without dead ends: 127 [2023-11-24 22:01:27,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:01:27,197 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 78 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:27,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 193 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:01:27,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-11-24 22:01:27,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2023-11-24 22:01:27,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 71 states have (on average 1.8873239436619718) internal successors, (134), 118 states have internal predecessors, (134), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:27,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 139 transitions. [2023-11-24 22:01:27,204 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 139 transitions. Word has length 10 [2023-11-24 22:01:27,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:27,205 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 139 transitions. [2023-11-24 22:01:27,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:27,205 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 139 transitions. [2023-11-24 22:01:27,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:01:27,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:27,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:27,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:01:27,207 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:27,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:27,207 INFO L85 PathProgramCache]: Analyzing trace with hash 769396376, now seen corresponding path program 1 times [2023-11-24 22:01:27,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:27,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195517737] [2023-11-24 22:01:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:27,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:27,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:27,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195517737] [2023-11-24 22:01:27,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195517737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:27,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:27,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:01:27,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623423665] [2023-11-24 22:01:27,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:27,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:01:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:27,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:01:27,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:01:27,441 INFO L87 Difference]: Start difference. First operand 120 states and 139 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:27,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:27,626 INFO L93 Difference]: Finished difference Result 120 states and 140 transitions. [2023-11-24 22:01:27,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:01:27,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2023-11-24 22:01:27,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:27,628 INFO L225 Difference]: With dead ends: 120 [2023-11-24 22:01:27,628 INFO L226 Difference]: Without dead ends: 120 [2023-11-24 22:01:27,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:01:27,629 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 5 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:27,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 283 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:01:27,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-24 22:01:27,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 117. [2023-11-24 22:01:27,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 71 states have (on average 1.8450704225352113) internal successors, (131), 115 states have internal predecessors, (131), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:27,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 136 transitions. [2023-11-24 22:01:27,635 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 136 transitions. Word has length 10 [2023-11-24 22:01:27,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:27,636 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 136 transitions. [2023-11-24 22:01:27,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:27,636 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 136 transitions. [2023-11-24 22:01:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 22:01:27,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:27,637 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:27,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 22:01:27,638 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:27,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:27,638 INFO L85 PathProgramCache]: Analyzing trace with hash 41858133, now seen corresponding path program 1 times [2023-11-24 22:01:27,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:27,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023310547] [2023-11-24 22:01:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:27,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:27,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:27,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023310547] [2023-11-24 22:01:27,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023310547] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:27,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:27,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:27,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333177727] [2023-11-24 22:01:27,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:27,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:27,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:27,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:27,780 INFO L87 Difference]: Start difference. First operand 117 states and 136 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:27,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:27,886 INFO L93 Difference]: Finished difference Result 122 states and 142 transitions. [2023-11-24 22:01:27,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:27,886 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-24 22:01:27,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:27,888 INFO L225 Difference]: With dead ends: 122 [2023-11-24 22:01:27,888 INFO L226 Difference]: Without dead ends: 122 [2023-11-24 22:01:27,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:27,891 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 59 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:27,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 116 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:01:27,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-24 22:01:27,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 112. [2023-11-24 22:01:27,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 71 states have (on average 1.7746478873239437) internal successors, (126), 110 states have internal predecessors, (126), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:27,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 131 transitions. [2023-11-24 22:01:27,903 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 131 transitions. Word has length 15 [2023-11-24 22:01:27,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:27,904 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 131 transitions. [2023-11-24 22:01:27,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:27,905 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 131 transitions. [2023-11-24 22:01:27,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-24 22:01:27,905 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:27,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:27,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-24 22:01:27,906 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:27,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:27,907 INFO L85 PathProgramCache]: Analyzing trace with hash 41858132, now seen corresponding path program 1 times [2023-11-24 22:01:27,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:27,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542462581] [2023-11-24 22:01:27,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:27,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:28,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:28,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542462581] [2023-11-24 22:01:28,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542462581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:28,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:28,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:28,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978896589] [2023-11-24 22:01:28,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:28,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:28,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:28,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:28,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:28,011 INFO L87 Difference]: Start difference. First operand 112 states and 131 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:28,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:28,103 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2023-11-24 22:01:28,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:28,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-24 22:01:28,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:28,105 INFO L225 Difference]: With dead ends: 117 [2023-11-24 22:01:28,105 INFO L226 Difference]: Without dead ends: 117 [2023-11-24 22:01:28,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:28,106 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 54 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:28,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 115 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:01:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-24 22:01:28,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 107. [2023-11-24 22:01:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 71 states have (on average 1.704225352112676) internal successors, (121), 105 states have internal predecessors, (121), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:28,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2023-11-24 22:01:28,110 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 15 [2023-11-24 22:01:28,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:28,111 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2023-11-24 22:01:28,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:28,111 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2023-11-24 22:01:28,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 22:01:28,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:28,112 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:28,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-24 22:01:28,112 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:28,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:28,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1571038946, now seen corresponding path program 1 times [2023-11-24 22:01:28,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:28,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595063157] [2023-11-24 22:01:28,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:28,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:28,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:28,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:28,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595063157] [2023-11-24 22:01:28,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595063157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:28,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:28,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:01:28,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430097395] [2023-11-24 22:01:28,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:28,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:01:28,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:28,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:01:28,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:01:28,326 INFO L87 Difference]: Start difference. First operand 107 states and 126 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:28,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:28,542 INFO L93 Difference]: Finished difference Result 151 states and 167 transitions. [2023-11-24 22:01:28,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:01:28,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-24 22:01:28,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:28,544 INFO L225 Difference]: With dead ends: 151 [2023-11-24 22:01:28,544 INFO L226 Difference]: Without dead ends: 151 [2023-11-24 22:01:28,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:01:28,545 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 184 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:28,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 130 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:01:28,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2023-11-24 22:01:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 113. [2023-11-24 22:01:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 77 states have (on average 1.7142857142857142) internal successors, (132), 111 states have internal predecessors, (132), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 137 transitions. [2023-11-24 22:01:28,550 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 137 transitions. Word has length 17 [2023-11-24 22:01:28,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:28,551 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 137 transitions. [2023-11-24 22:01:28,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:28,551 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 137 transitions. [2023-11-24 22:01:28,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-24 22:01:28,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:28,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:28,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-24 22:01:28,552 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:28,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:28,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1571038947, now seen corresponding path program 1 times [2023-11-24 22:01:28,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:28,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261250061] [2023-11-24 22:01:28,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:28,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:28,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:28,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:28,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261250061] [2023-11-24 22:01:28,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261250061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:28,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:28,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:01:28,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838363958] [2023-11-24 22:01:28,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:28,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 22:01:28,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:28,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 22:01:28,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:01:28,890 INFO L87 Difference]: Start difference. First operand 113 states and 137 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:29,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:29,286 INFO L93 Difference]: Finished difference Result 194 states and 227 transitions. [2023-11-24 22:01:29,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:01:29,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-11-24 22:01:29,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:29,288 INFO L225 Difference]: With dead ends: 194 [2023-11-24 22:01:29,289 INFO L226 Difference]: Without dead ends: 194 [2023-11-24 22:01:29,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-24 22:01:29,290 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 318 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:29,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 175 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-24 22:01:29,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-24 22:01:29,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 146. [2023-11-24 22:01:29,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 110 states have (on average 1.6727272727272726) internal successors, (184), 144 states have internal predecessors, (184), 5 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 189 transitions. [2023-11-24 22:01:29,296 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 189 transitions. Word has length 17 [2023-11-24 22:01:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:29,297 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 189 transitions. [2023-11-24 22:01:29,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 189 transitions. [2023-11-24 22:01:29,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 22:01:29,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:29,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:29,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-24 22:01:29,298 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr66ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:29,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:29,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1457568018, now seen corresponding path program 1 times [2023-11-24 22:01:29,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:29,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104049491] [2023-11-24 22:01:29,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:29,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:29,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:29,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:29,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:29,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104049491] [2023-11-24 22:01:29,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104049491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:29,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:29,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:01:29,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694567669] [2023-11-24 22:01:29,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:29,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:01:29,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:29,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:01:29,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:01:29,412 INFO L87 Difference]: Start difference. First operand 146 states and 189 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:29,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:29,537 INFO L93 Difference]: Finished difference Result 181 states and 218 transitions. [2023-11-24 22:01:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:01:29,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-24 22:01:29,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:29,540 INFO L225 Difference]: With dead ends: 181 [2023-11-24 22:01:29,540 INFO L226 Difference]: Without dead ends: 181 [2023-11-24 22:01:29,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:01:29,541 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 165 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:29,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 180 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:01:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-24 22:01:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 145. [2023-11-24 22:01:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 110 states have (on average 1.6454545454545455) internal successors, (181), 143 states have internal predecessors, (181), 4 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:29,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 185 transitions. [2023-11-24 22:01:29,549 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 185 transitions. Word has length 18 [2023-11-24 22:01:29,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:29,549 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 185 transitions. [2023-11-24 22:01:29,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 185 transitions. [2023-11-24 22:01:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-24 22:01:29,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:29,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:29,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-24 22:01:29,551 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:29,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash 566047051, now seen corresponding path program 1 times [2023-11-24 22:01:29,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:29,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963367829] [2023-11-24 22:01:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:29,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:30,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:30,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:30,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963367829] [2023-11-24 22:01:30,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963367829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:30,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:30,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-24 22:01:30,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193423241] [2023-11-24 22:01:30,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:30,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 22:01:30,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:30,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 22:01:30,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-11-24 22:01:30,580 INFO L87 Difference]: Start difference. First operand 145 states and 185 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:31,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:31,357 INFO L93 Difference]: Finished difference Result 178 states and 214 transitions. [2023-11-24 22:01:31,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-24 22:01:31,358 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-11-24 22:01:31,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:31,359 INFO L225 Difference]: With dead ends: 178 [2023-11-24 22:01:31,359 INFO L226 Difference]: Without dead ends: 178 [2023-11-24 22:01:31,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2023-11-24 22:01:31,360 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 270 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:31,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 457 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 22:01:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-24 22:01:31,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 151. [2023-11-24 22:01:31,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 117 states have (on average 1.5811965811965811) internal successors, (185), 149 states have internal predecessors, (185), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:31,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 188 transitions. [2023-11-24 22:01:31,366 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 188 transitions. Word has length 20 [2023-11-24 22:01:31,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:31,367 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 188 transitions. [2023-11-24 22:01:31,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 188 transitions. [2023-11-24 22:01:31,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-24 22:01:31,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:31,368 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:31,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-24 22:01:31,369 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:31,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:31,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1573212541, now seen corresponding path program 1 times [2023-11-24 22:01:31,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:31,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4515656] [2023-11-24 22:01:31,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:31,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:31,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:31,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4515656] [2023-11-24 22:01:31,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4515656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:31,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:31,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:01:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355814957] [2023-11-24 22:01:31,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:31,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:01:31,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:31,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:01:31,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:31,456 INFO L87 Difference]: Start difference. First operand 151 states and 188 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:31,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:31,509 INFO L93 Difference]: Finished difference Result 150 states and 186 transitions. [2023-11-24 22:01:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:01:31,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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 24 [2023-11-24 22:01:31,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:31,511 INFO L225 Difference]: With dead ends: 150 [2023-11-24 22:01:31,511 INFO L226 Difference]: Without dead ends: 150 [2023-11-24 22:01:31,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:01:31,512 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 41 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:31,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 131 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 22:01:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-24 22:01:31,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2023-11-24 22:01:31,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 117 states have (on average 1.5726495726495726) internal successors, (184), 148 states have internal predecessors, (184), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:31,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 186 transitions. [2023-11-24 22:01:31,518 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 186 transitions. Word has length 24 [2023-11-24 22:01:31,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:31,519 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 186 transitions. [2023-11-24 22:01:31,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:31,519 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 186 transitions. [2023-11-24 22:01:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 22:01:31,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:31,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:31,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-24 22:01:31,521 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr64ASSERT_VIOLATIONMEMORY_FREE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:31,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:31,522 INFO L85 PathProgramCache]: Analyzing trace with hash 2060682207, now seen corresponding path program 1 times [2023-11-24 22:01:31,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:31,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054139903] [2023-11-24 22:01:31,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:31,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:31,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:31,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:31,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054139903] [2023-11-24 22:01:31,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054139903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:31,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:01:31,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:01:31,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092951803] [2023-11-24 22:01:31,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:31,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:01:31,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:31,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:01:31,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:01:31,626 INFO L87 Difference]: Start difference. First operand 150 states and 186 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:31,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:31,786 INFO L93 Difference]: Finished difference Result 182 states and 213 transitions. [2023-11-24 22:01:31,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:01:31,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-11-24 22:01:31,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:31,788 INFO L225 Difference]: With dead ends: 182 [2023-11-24 22:01:31,788 INFO L226 Difference]: Without dead ends: 182 [2023-11-24 22:01:31,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:01:31,790 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 152 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:31,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 179 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:01:31,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-24 22:01:31,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 152. [2023-11-24 22:01:31,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 119 states have (on average 1.5630252100840336) internal successors, (186), 150 states have internal predecessors, (186), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:31,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 188 transitions. [2023-11-24 22:01:31,797 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 188 transitions. Word has length 25 [2023-11-24 22:01:31,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:31,798 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 188 transitions. [2023-11-24 22:01:31,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:31,798 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 188 transitions. [2023-11-24 22:01:31,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 22:01:31,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:31,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:31,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-24 22:01:31,800 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:31,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:31,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1772464190, now seen corresponding path program 1 times [2023-11-24 22:01:31,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:31,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219795626] [2023-11-24 22:01:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:31,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:32,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:32,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219795626] [2023-11-24 22:01:32,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219795626] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:01:32,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865723595] [2023-11-24 22:01:32,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:32,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:01:32,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:01:32,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:01:32,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 22:01:33,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:33,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 46 conjunts are in the unsatisfiable core [2023-11-24 22:01:33,089 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:01:33,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 22:01:33,230 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-11-24 22:01:33,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2023-11-24 22:01:33,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 22:01:33,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:33,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:33,358 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-24 22:01:33,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-24 22:01:33,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-24 22:01:33,631 INFO L349 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2023-11-24 22:01:33,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 51 [2023-11-24 22:01:33,645 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 19 treesize of output 13 [2023-11-24 22:01:33,784 INFO L349 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2023-11-24 22:01:33,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 58 [2023-11-24 22:01:33,877 INFO L349 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2023-11-24 22:01:33,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 71 treesize of output 58 [2023-11-24 22:01:34,006 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2023-11-24 22:01:34,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2023-11-24 22:01:34,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-24 22:01:34,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-11-24 22:01:34,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 17 [2023-11-24 22:01:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:34,539 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:01:35,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:35,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 31 [2023-11-24 22:01:36,545 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:36,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2023-11-24 22:01:36,552 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 22:01:36,553 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-24 22:01:36,563 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:36,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 50 [2023-11-24 22:01:36,579 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:36,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 64 [2023-11-24 22:01:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:37,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865723595] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:01:37,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 22:01:37,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 12] total 35 [2023-11-24 22:01:37,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937645036] [2023-11-24 22:01:37,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 22:01:37,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-24 22:01:37,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-24 22:01:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=1126, Unknown=12, NotChecked=0, Total=1332 [2023-11-24 22:01:37,896 INFO L87 Difference]: Start difference. First operand 152 states and 188 transitions. Second operand has 37 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:45,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:45,771 INFO L93 Difference]: Finished difference Result 195 states and 226 transitions. [2023-11-24 22:01:45,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-24 22:01:45,772 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-24 22:01:45,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:45,773 INFO L225 Difference]: With dead ends: 195 [2023-11-24 22:01:45,773 INFO L226 Difference]: Without dead ends: 195 [2023-11-24 22:01:45,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=582, Invalid=2596, Unknown=14, NotChecked=0, Total=3192 [2023-11-24 22:01:45,775 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 504 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 100 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:45,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [504 Valid, 882 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1437 Invalid, 5 Unknown, 0 Unchecked, 2.2s Time] [2023-11-24 22:01:45,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-24 22:01:45,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 153. [2023-11-24 22:01:45,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 120 states have (on average 1.5666666666666667) internal successors, (188), 151 states have internal predecessors, (188), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:45,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 190 transitions. [2023-11-24 22:01:45,782 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 190 transitions. Word has length 27 [2023-11-24 22:01:45,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:45,782 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 190 transitions. [2023-11-24 22:01:45,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.1666666666666665) internal successors, (78), 36 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:45,783 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 190 transitions. [2023-11-24 22:01:45,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-24 22:01:45,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:45,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:45,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 22:01:45,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-24 22:01:45,991 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:45,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:45,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1772464191, now seen corresponding path program 1 times [2023-11-24 22:01:45,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:45,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129177453] [2023-11-24 22:01:45,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:45,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:47,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:47,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:47,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129177453] [2023-11-24 22:01:47,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129177453] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:01:47,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297046549] [2023-11-24 22:01:47,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:47,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:01:47,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:01:47,482 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:01:47,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 22:01:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:47,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-24 22:01:47,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:01:47,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 22:01:47,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 22:01:47,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-24 22:01:47,766 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 22:01:47,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 22:01:47,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 22:01:47,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-24 22:01:47,907 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-24 22:01:47,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:47,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:48,016 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-24 22:01:48,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-24 22:01:48,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 22:01:48,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:48,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-11-24 22:01:48,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:48,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:48,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:48,436 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-11-24 22:01:48,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-11-24 22:01:48,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:48,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2023-11-24 22:01:48,780 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:48,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 18 [2023-11-24 22:01:48,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:48,883 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:01:48,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297046549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:01:48,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 22:01:48,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [13] total 28 [2023-11-24 22:01:48,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854017517] [2023-11-24 22:01:48,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:01:48,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-24 22:01:48,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:01:48,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-24 22:01:48,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2023-11-24 22:01:48,885 INFO L87 Difference]: Start difference. First operand 153 states and 190 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:01:50,754 INFO L93 Difference]: Finished difference Result 254 states and 302 transitions. [2023-11-24 22:01:50,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 22:01:50,759 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 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 27 [2023-11-24 22:01:50,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:01:50,761 INFO L225 Difference]: With dead ends: 254 [2023-11-24 22:01:50,761 INFO L226 Difference]: Without dead ends: 253 [2023-11-24 22:01:50,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=288, Invalid=1604, Unknown=0, NotChecked=0, Total=1892 [2023-11-24 22:01:50,763 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 350 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 22:01:50,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 732 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 794 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 22:01:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2023-11-24 22:01:50,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 171. [2023-11-24 22:01:50,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 138 states have (on average 1.5144927536231885) internal successors, (209), 169 states have internal predecessors, (209), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 211 transitions. [2023-11-24 22:01:50,770 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 211 transitions. Word has length 27 [2023-11-24 22:01:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:01:50,771 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 211 transitions. [2023-11-24 22:01:50,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 16 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 22:01:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 211 transitions. [2023-11-24 22:01:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-24 22:01:50,772 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:01:50,772 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:01:50,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-24 22:01:50,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-24 22:01:50,980 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 22:01:50,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:01:50,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1816383173, now seen corresponding path program 1 times [2023-11-24 22:01:50,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:01:50,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343302128] [2023-11-24 22:01:50,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:50,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:01:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:51,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:51,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:01:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343302128] [2023-11-24 22:01:51,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343302128] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:01:51,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1081099041] [2023-11-24 22:01:51,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:01:51,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 22:01:51,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:01:51,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 22:01:51,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5609c5-c268-452e-a12b-f8c4fa3870c4/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 22:01:51,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:01:51,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 40 conjunts are in the unsatisfiable core [2023-11-24 22:01:51,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:01:51,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 22:01:51,973 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 22:01:51,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 22:01:51,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 22:01:52,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:52,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-24 22:01:52,056 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-24 22:01:52,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-24 22:01:52,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-11-24 22:01:52,184 INFO L349 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2023-11-24 22:01:52,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 44 [2023-11-24 22:01:52,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2023-11-24 22:01:52,299 INFO L349 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2023-11-24 22:01:52,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 51 [2023-11-24 22:01:52,372 INFO L349 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2023-11-24 22:01:52,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 58 treesize of output 51 [2023-11-24 22:01:52,498 INFO L349 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2023-11-24 22:01:52,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-11-24 22:01:52,778 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:52,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2023-11-24 22:01:52,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-24 22:01:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:01:52,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:01:53,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:53,479 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 61 treesize of output 65 [2023-11-24 22:01:53,571 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~bcki~0#1.base|))) (and (forall ((|v_ULTIMATE.start_main_~bcki~0#1.offset_84| Int) (|ULTIMATE.start_main_~bcki~0#1.offset| Int) (v_ArrVal_1113 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~bucket~0#1.offset| |v_ULTIMATE.start_main_~bcki~0#1.offset_84|) (not (= |c_ULTIMATE.start_main_~bucket~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~bcki~0#1.base| (store .cse0 |ULTIMATE.start_main_~bcki~0#1.offset| |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1113) |c_ULTIMATE.start_main_~bucket~0#1.base|) |v_ULTIMATE.start_main_~bcki~0#1.offset_84|))) (< |v_ULTIMATE.start_main_~bcki~0#1.offset_84| 0))) (forall ((|ULTIMATE.start_main_~bcki~0#1.offset| Int) (v_prenex_1 Int) (v_prenex_2 (Array Int Int))) (or (< v_prenex_1 0) (< |c_ULTIMATE.start_main_~bucket~0#1.offset| v_prenex_1) (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~bcki~0#1.base| (store .cse0 |ULTIMATE.start_main_~bcki~0#1.offset| |c_ULTIMATE.start_main_#t~malloc4#1.base|)) |c_ULTIMATE.start_main_#t~malloc4#1.base| v_prenex_2) |c_ULTIMATE.start_main_~bucket~0#1.base|) v_prenex_1) |c_ULTIMATE.start_main_~bcki~0#1.base|))) (forall ((|ULTIMATE.start_main_~bcki~0#1.offset| Int) (v_prenex_1 Int) (v_prenex_2 (Array Int Int))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~bcki~0#1.base| (store .cse0 |ULTIMATE.start_main_~bcki~0#1.offset| |c_ULTIMATE.start_main_#t~malloc4#1.base|)))) (or (= (select (select (store .cse1 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_prenex_2) |c_ULTIMATE.start_main_~bucket~0#1.base|) v_prenex_1) |c_ULTIMATE.start_main_~bcki~0#1.base|) (forall ((|v_ULTIMATE.start_main_~bcki~0#1.offset_84| Int) (v_ArrVal_1113 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~bucket~0#1.offset| |v_ULTIMATE.start_main_~bcki~0#1.offset_84|) (not (= |c_ULTIMATE.start_main_~bucket~0#1.base| (select (select (store .cse1 |c_ULTIMATE.start_main_#t~malloc4#1.base| v_ArrVal_1113) |c_ULTIMATE.start_main_~bucket~0#1.base|) |v_ULTIMATE.start_main_~bcki~0#1.offset_84|))) (< |v_ULTIMATE.start_main_~bcki~0#1.offset_84| 0)))))))) is different from false [2023-11-24 22:01:53,635 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:53,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 88 treesize of output 137 [2023-11-24 22:01:53,754 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-24 22:01:53,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 26 [2023-11-24 22:01:53,787 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2023-11-24 22:01:53,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 37 treesize of output 26 [2023-11-24 22:01:53,938 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-24 22:01:53,938 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 2 case distinctions, treesize of input 46 treesize of output 26 [2023-11-24 22:01:53,982 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_6 Int) (|ULTIMATE.start_main_~bcki~0#1.offset| Int) (v_prenex_4 Int) (v_prenex_3 Int) (v_arrayElimArr_4 (Array Int Int)) (v_DerPreprocessor_5 Int) (v_prenex_5 (Array Int Int)) (v_DerPreprocessor_1 Int)) (let ((.cse2 (store v_arrayElimArr_4 v_prenex_4 v_DerPreprocessor_5)) (.cse0 (select v_arrayElimArr_4 v_prenex_4))) (let ((.cse1 (store (store .cse2 |ULTIMATE.start_main_~bcki~0#1.offset| v_DerPreprocessor_1) v_prenex_6 .cse0))) (or (not (= (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~bcki~0#1.base| v_arrayElimArr_4) .cse0 v_prenex_5) |c_ULTIMATE.start_main_~bucket~0#1.base|) v_prenex_3) |c_ULTIMATE.start_main_~bucket~0#1.base|)) (not (= v_DerPreprocessor_1 (select .cse1 |ULTIMATE.start_main_~bcki~0#1.offset|))) (not (= (store (store v_arrayElimArr_4 v_prenex_4 (select .cse1 v_prenex_4)) v_prenex_6 .cse0) .cse1)) (< v_prenex_3 0) (not (= (select |c_#valid| .cse0) 0)) (not (= (select (store .cse2 |ULTIMATE.start_main_~bcki~0#1.offset| .cse0) v_prenex_4) v_DerPreprocessor_5)) (< |c_ULTIMATE.start_main_~bucket~0#1.offset| v_prenex_3))))) (forall ((v_arrayElimArr_5 (Array Int Int)) (|ULTIMATE.start_main_~bcki~0#1.offset| Int)) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~bcki~0#1.base| v_arrayElimArr_5)) (.cse4 (select v_arrayElimArr_5 |ULTIMATE.start_main_~bcki~0#1.offset|))) (or (forall ((v_prenex_1 Int) (v_prenex_2 (Array Int Int))) (= |c_ULTIMATE.start_main_~bcki~0#1.base| (select (select (store .cse3 .cse4 v_prenex_2) |c_ULTIMATE.start_main_~bucket~0#1.base|) v_prenex_1))) (forall ((|v_ULTIMATE.start_main_~bcki~0#1.offset_84| Int) (v_ArrVal_1113 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~bucket~0#1.offset| |v_ULTIMATE.start_main_~bcki~0#1.offset_84|) (not (= (select (select (store .cse3 .cse4 v_ArrVal_1113) |c_ULTIMATE.start_main_~bucket~0#1.base|) |v_ULTIMATE.start_main_~bcki~0#1.offset_84|) |c_ULTIMATE.start_main_~bucket~0#1.base|)) (< |v_ULTIMATE.start_main_~bcki~0#1.offset_84| 0))) (not (= (select |c_#valid| .cse4) 0)) (forall ((v_prenex_6 Int) (v_DerPreprocessor_3 Int)) (not (= v_DerPreprocessor_3 (select (store (store v_arrayElimArr_5 |ULTIMATE.start_main_~bcki~0#1.offset| v_DerPreprocessor_3) v_prenex_6 .cse4) |ULTIMATE.start_main_~bcki~0#1.offset|))))))) (forall ((v_prenex_6 Int) (v_prenex_8 (Array Int Int)) (v_prenex_7 Int) (v_arrayElimArr_3 (Array Int Int))) (let ((.cse5 (select v_arrayElimArr_3 v_prenex_6))) (or (< |c_ULTIMATE.start_main_~bucket~0#1.offset| v_prenex_7) (= |c_ULTIMATE.start_main_~bcki~0#1.base| (select (select (store (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~bcki~0#1.base| v_arrayElimArr_3) .cse5 v_prenex_8) |c_ULTIMATE.start_main_~bucket~0#1.base|) v_prenex_7)) (not (= (select |c_#valid| .cse5) 0)) (< v_prenex_7 0))))) is different from false [2023-11-24 22:01:54,198 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~bucket~0#1.base|) |c_ULTIMATE.start_main_~bucket~0#1.offset|))) (and (forall ((v_arrayElimArr_5 (Array Int Int)) (|ULTIMATE.start_main_~bcki~0#1.offset| Int)) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| .cse2 v_arrayElimArr_5)) (.cse0 (select v_arrayElimArr_5 |ULTIMATE.start_main_~bcki~0#1.offset|))) (or (not (= (select |c_#valid| .cse0) 0)) (forall ((|v_ULTIMATE.start_main_~bcki~0#1.offset_84| Int) (v_ArrVal_1113 (Array Int Int))) (or (< |c_ULTIMATE.start_main_~bucket~0#1.offset| |v_ULTIMATE.start_main_~bcki~0#1.offset_84|) (< |v_ULTIMATE.start_main_~bcki~0#1.offset_84| 0) (not (= (select (select (store .cse1 .cse0 v_ArrVal_1113) |c_ULTIMATE.start_main_~bucket~0#1.base|) |v_ULTIMATE.start_main_~bcki~0#1.offset_84|) |c_ULTIMATE.start_main_~bucket~0#1.base|)))) (forall ((v_prenex_6 Int) (v_DerPreprocessor_3 Int)) (not (= v_DerPreprocessor_3 (select (store (store v_arrayElimArr_5 |ULTIMATE.start_main_~bcki~0#1.offset| v_DerPreprocessor_3) v_prenex_6 .cse0) |ULTIMATE.start_main_~bcki~0#1.offset|)))) (forall ((v_prenex_1 Int) (v_prenex_2 (Array Int Int))) (= .cse2 (select (select (store .cse1 .cse0 v_prenex_2) |c_ULTIMATE.start_main_~bucket~0#1.base|) v_prenex_1)))))) (forall ((v_prenex_6 Int) (|ULTIMATE.start_main_~bcki~0#1.offset| Int) (v_prenex_4 Int) (v_prenex_3 Int) (v_arrayElimArr_4 (Array Int Int)) (v_DerPreprocessor_5 Int) (v_prenex_5 (Array Int Int)) (v_DerPreprocessor_1 Int)) (let ((.cse5 (store v_arrayElimArr_4 v_prenex_4 v_DerPreprocessor_5)) (.cse4 (select v_arrayElimArr_4 v_prenex_4))) (let ((.cse3 (store (store .cse5 |ULTIMATE.start_main_~bcki~0#1.offset| v_DerPreprocessor_1) v_prenex_6 .cse4))) (or (not (= v_DerPreprocessor_1 (select .cse3 |ULTIMATE.start_main_~bcki~0#1.offset|))) (not (= (store (store v_arrayElimArr_4 v_prenex_4 (select .cse3 v_prenex_4)) v_prenex_6 .cse4) .cse3)) (< v_prenex_3 0) (not (= (select |c_#valid| .cse4) 0)) (not (= (select (select (store (store |c_#memory_$Pointer$#1.base| .cse2 v_arrayElimArr_4) .cse4 v_prenex_5) |c_ULTIMATE.start_main_~bucket~0#1.base|) v_prenex_3) |c_ULTIMATE.start_main_~bucket~0#1.base|)) (not (= (select (store .cse5 |ULTIMATE.start_main_~bcki~0#1.offset| .cse4) v_prenex_4) v_DerPreprocessor_5)) (< |c_ULTIMATE.start_main_~bucket~0#1.offset| v_prenex_3))))) (forall ((v_prenex_6 Int) (v_prenex_8 (Array Int Int)) (v_prenex_7 Int) (v_arrayElimArr_3 (Array Int Int))) (let ((.cse6 (select v_arrayElimArr_3 v_prenex_6))) (or (< |c_ULTIMATE.start_main_~bucket~0#1.offset| v_prenex_7) (= .cse2 (select (select (store (store |c_#memory_$Pointer$#1.base| .cse2 v_arrayElimArr_3) .cse6 v_prenex_8) |c_ULTIMATE.start_main_~bucket~0#1.base|) v_prenex_7)) (not (= (select |c_#valid| .cse6) 0)) (< v_prenex_7 0)))))) is different from false [2023-11-24 22:01:54,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:54,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 198 [2023-11-24 22:01:54,375 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:54,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 518 treesize of output 570 [2023-11-24 22:01:54,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:54,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 350 treesize of output 351 [2023-11-24 22:01:54,495 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 321 treesize of output 317 [2023-11-24 22:01:54,521 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 317 treesize of output 313 [2023-11-24 22:01:54,608 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:54,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 320 treesize of output 368 [2023-11-24 22:01:54,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 303 treesize of output 299 [2023-11-24 22:01:55,014 INFO L349 Elim1Store]: treesize reduction 236, result has 29.3 percent of original size [2023-11-24 22:01:55,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 421 treesize of output 521 [2023-11-24 22:01:55,165 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 296 treesize of output 292 [2023-11-24 22:01:55,245 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-24 22:01:55,246 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 325 treesize of output 321