./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/busybox-1.22.0/hostid.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/busybox-1.22.0/hostid.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd --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 64bit --witnessprinter.graph.data.programhash 9ff8320881bb5cbc5b52aa5a0a8dd146a23603ac32480303b1494fa48d4d27d8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:19:01,664 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:19:01,793 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-13 14:19:01,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:19:01,804 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:19:01,833 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:19:01,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:19:01,834 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:19:01,834 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:19:01,835 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:19:01,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:19:01,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:19:01,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:19:01,836 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:19:01,836 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:19:01,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:19:01,836 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:19:01,837 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:19:01,837 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:19:01,837 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:19:01,837 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:19:01,837 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:19:01,838 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:19:01,838 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:19:01,838 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:19:01,838 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:19:01,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:19:01,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:19:01,839 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:19:01,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:19:01,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:19:01,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:19:01,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:19:01,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:19:01,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:19:01,840 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:19:01,840 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:19:01,840 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:19:01,840 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:19:01,840 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff8320881bb5cbc5b52aa5a0a8dd146a23603ac32480303b1494fa48d4d27d8 [2024-11-13 14:19:02,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:19:02,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:19:02,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:19:02,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:19:02,257 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:19:02,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/busybox-1.22.0/hostid.i Unable to find full path for "g++" [2024-11-13 14:19:04,610 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:19:05,131 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:19:05,132 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/sv-benchmarks/c/busybox-1.22.0/hostid.i [2024-11-13 14:19:05,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/data/912603b41/dd9a218ad90843e5adef2a436d4c3091/FLAGffb3eb983 [2024-11-13 14:19:05,181 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/data/912603b41/dd9a218ad90843e5adef2a436d4c3091 [2024-11-13 14:19:05,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:19:05,186 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:19:05,188 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:19:05,188 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:19:05,194 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:19:05,195 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:19:05" (1/1) ... [2024-11-13 14:19:05,196 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c95001 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:05, skipping insertion in model container [2024-11-13 14:19:05,199 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:19:05" (1/1) ... [2024-11-13 14:19:05,264 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:19:06,380 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:19:06,384 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:19:06,407 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:19:06,425 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:19:06,453 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:19:06,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:19:06,765 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:19:06,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06 WrapperNode [2024-11-13 14:19:06,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:19:06,768 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:19:06,768 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:19:06,768 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:19:06,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:06,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:06,882 INFO L138 Inliner]: procedures = 524, calls = 407, calls flagged for inlining = 7, calls inlined = 6, statements flattened = 494 [2024-11-13 14:19:06,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:19:06,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:19:06,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:19:06,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:19:06,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:06,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:06,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:06,951 INFO L175 MemorySlicer]: Split 369 memory accesses to 6 slices as follows [2, 355, 6, 2, 2, 2]. 96 percent of accesses are in the largest equivalence class. The 357 initializations are split as follows [2, 355, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 2, 2, 2, 1]. [2024-11-13 14:19:06,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:06,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:06,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:07,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:07,016 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:07,023 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:07,042 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:19:07,043 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:19:07,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:19:07,044 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:19:07,045 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (1/1) ... [2024-11-13 14:19:07,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:19:07,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:07,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:19:07,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:19:07,131 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:19:07,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:19:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 14:19:07,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-13 14:19:07,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:19:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:19:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-13 14:19:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-13 14:19:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-13 14:19:07,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-13 14:19:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:19:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:19:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 14:19:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-13 14:19:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-13 14:19:07,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-13 14:19:07,696 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:19:07,698 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:19:08,493 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2024-11-13 14:19:08,493 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:19:08,517 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:19:08,518 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 14:19:08,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:08 BoogieIcfgContainer [2024-11-13 14:19:08,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:19:08,524 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:19:08,524 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:19:08,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:19:08,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:19:05" (1/3) ... [2024-11-13 14:19:08,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3395aabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:19:08, skipping insertion in model container [2024-11-13 14:19:08,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:06" (2/3) ... [2024-11-13 14:19:08,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3395aabb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:19:08, skipping insertion in model container [2024-11-13 14:19:08,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:08" (3/3) ... [2024-11-13 14:19:08,534 INFO L112 eAbstractionObserver]: Analyzing ICFG hostid.i [2024-11-13 14:19:08,556 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:19:08,558 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hostid.i that has 2 procedures, 96 locations, 1 initial locations, 5 loop locations, and 38 error locations. [2024-11-13 14:19:08,645 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:19:08,667 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@64a54121, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:19:08,667 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-13 14:19:08,674 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 55 states have (on average 1.8909090909090909) internal successors, (104), 93 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:08,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 14:19:08,683 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:08,684 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 14:19:08,685 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:08,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:08,694 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2024-11-13 14:19:08,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:08,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341297095] [2024-11-13 14:19:08,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:08,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:09,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:09,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341297095] [2024-11-13 14:19:09,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341297095] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:09,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:09,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:19:09,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556809227] [2024-11-13 14:19:09,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:09,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:19:09,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:19:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:09,739 INFO L87 Difference]: Start difference. First operand has 96 states, 55 states have (on average 1.8909090909090909) internal successors, (104), 93 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:09,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:09,909 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2024-11-13 14:19:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:19:09,913 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-13 14:19:09,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:09,921 INFO L225 Difference]: With dead ends: 59 [2024-11-13 14:19:09,922 INFO L226 Difference]: Without dead ends: 59 [2024-11-13 14:19:09,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:09,932 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 51 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:09,933 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 40 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:09,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-13 14:19:09,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-13 14:19:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 56 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:09,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-11-13 14:19:10,000 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 3 [2024-11-13 14:19:10,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:10,001 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-11-13 14:19:10,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-11-13 14:19:10,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 14:19:10,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:10,004 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 14:19:10,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:19:10,004 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:10,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:10,005 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2024-11-13 14:19:10,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:10,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056290926] [2024-11-13 14:19:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:10,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:10,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:10,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:10,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:10,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056290926] [2024-11-13 14:19:10,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056290926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:10,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:10,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:19:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122158076] [2024-11-13 14:19:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:10,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:19:10,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:10,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:19:10,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:10,560 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:10,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:10,695 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-13 14:19:10,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:19:10,696 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-13 14:19:10,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:10,697 INFO L225 Difference]: With dead ends: 58 [2024-11-13 14:19:10,697 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 14:19:10,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:10,699 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:10,699 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 85 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:10,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 14:19:10,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-13 14:19:10,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 55 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2024-11-13 14:19:10,706 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 3 [2024-11-13 14:19:10,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:10,707 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2024-11-13 14:19:10,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:10,707 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2024-11-13 14:19:10,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 14:19:10,708 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:10,708 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:19:10,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:19:10,708 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:10,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:10,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2024-11-13 14:19:10,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:10,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691270870] [2024-11-13 14:19:10,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:10,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:11,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:11,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691270870] [2024-11-13 14:19:11,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691270870] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:11,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:11,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:19:11,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037087605] [2024-11-13 14:19:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:11,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:19:11,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:11,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:19:11,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:19:11,235 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-13 14:19:11,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:11,402 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2024-11-13 14:19:11,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:19:11,403 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2024-11-13 14:19:11,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:11,403 INFO L225 Difference]: With dead ends: 61 [2024-11-13 14:19:11,403 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 14:19:11,404 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:19:11,404 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:11,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:19:11,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 14:19:11,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-11-13 14:19:11,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.605263157894737) internal successors, (61), 57 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-13 14:19:11,420 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 6 [2024-11-13 14:19:11,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:11,421 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-13 14:19:11,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-13 14:19:11,421 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-13 14:19:11,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 14:19:11,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:11,424 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:11,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:19:11,425 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:11,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash 71429206, now seen corresponding path program 1 times [2024-11-13 14:19:11,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:11,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563147644] [2024-11-13 14:19:11,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:11,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:12,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:12,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563147644] [2024-11-13 14:19:12,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563147644] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:12,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955939111] [2024-11-13 14:19:12,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:12,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:12,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:12,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:12,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:19:12,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:12,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:19:12,534 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:12,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:12,746 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:12,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-13 14:19:12,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:12,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955939111] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:12,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:12,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2024-11-13 14:19:12,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431833681] [2024-11-13 14:19:12,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:12,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:19:12,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:12,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:19:12,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:19:12,972 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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) [2024-11-13 14:19:13,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:13,329 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2024-11-13 14:19:13,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:19:13,331 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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 9 [2024-11-13 14:19:13,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:13,332 INFO L225 Difference]: With dead ends: 64 [2024-11-13 14:19:13,332 INFO L226 Difference]: Without dead ends: 64 [2024-11-13 14:19:13,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:19:13,333 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 105 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:13,334 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 197 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:19:13,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-13 14:19:13,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-13 14:19:13,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 61 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:13,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2024-11-13 14:19:13,341 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 9 [2024-11-13 14:19:13,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:13,341 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2024-11-13 14:19:13,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 14 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) [2024-11-13 14:19:13,342 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2024-11-13 14:19:13,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:19:13,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:13,343 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:13,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:19:13,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-13 14:19:13,548 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:13,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:13,549 INFO L85 PathProgramCache]: Analyzing trace with hash 470149178, now seen corresponding path program 1 times [2024-11-13 14:19:13,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:13,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714769144] [2024-11-13 14:19:13,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:13,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:14,116 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 14:19:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:14,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:14,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714769144] [2024-11-13 14:19:14,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714769144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:14,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161157734] [2024-11-13 14:19:14,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:14,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:14,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:14,160 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:14,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:19:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:14,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:19:14,530 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:14,579 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:14,579 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:14,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:14,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1161157734] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:14,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:14,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2024-11-13 14:19:14,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643556579] [2024-11-13 14:19:14,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:14,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:19:14,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:19:14,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:19:14,707 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:19:14,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:14,804 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2024-11-13 14:19:14,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:19:14,805 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-13 14:19:14,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:14,806 INFO L225 Difference]: With dead ends: 79 [2024-11-13 14:19:14,806 INFO L226 Difference]: Without dead ends: 79 [2024-11-13 14:19:14,806 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:19:14,807 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 4 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:14,807 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 216 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:14,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-13 14:19:14,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-13 14:19:14,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 76 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:14,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2024-11-13 14:19:14,820 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 22 [2024-11-13 14:19:14,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:14,820 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2024-11-13 14:19:14,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:19:14,820 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2024-11-13 14:19:14,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:19:14,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:14,824 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:14,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:19:15,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:15,025 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:15,025 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:15,025 INFO L85 PathProgramCache]: Analyzing trace with hash -405799385, now seen corresponding path program 2 times [2024-11-13 14:19:15,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:15,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952365] [2024-11-13 14:19:15,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:15,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:15,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:15,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 14:19:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:15,774 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:15,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:15,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952365] [2024-11-13 14:19:15,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952365] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:15,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836651783] [2024-11-13 14:19:15,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:19:15,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:15,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:15,778 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:15,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:19:16,177 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:19:16,177 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:19:16,182 INFO L255 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:19:16,189 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:16,232 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-13 14:19:16,232 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 1 case distinctions, treesize of input 9 treesize of output 11 [2024-11-13 14:19:16,305 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 14:19:16,305 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:19:16,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836651783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:16,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:19:16,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 12 [2024-11-13 14:19:16,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806072113] [2024-11-13 14:19:16,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:16,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:19:16,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:16,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:19:16,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:19:16,307 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:16,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:16,464 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2024-11-13 14:19:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:19:16,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-13 14:19:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:16,466 INFO L225 Difference]: With dead ends: 74 [2024-11-13 14:19:16,466 INFO L226 Difference]: Without dead ends: 74 [2024-11-13 14:19:16,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:19:16,467 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:16,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 45 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:16,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-13 14:19:16,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-13 14:19:16,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.293103448275862) internal successors, (75), 71 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-11-13 14:19:16,481 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 37 [2024-11-13 14:19:16,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:16,483 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-11-13 14:19:16,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-11-13 14:19:16,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:19:16,485 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:16,485 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:16,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:19:16,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:16,686 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:16,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:16,686 INFO L85 PathProgramCache]: Analyzing trace with hash -405799384, now seen corresponding path program 1 times [2024-11-13 14:19:16,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:16,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29224215] [2024-11-13 14:19:16,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:16,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:17,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2024-11-13 14:19:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:17,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:17,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29224215] [2024-11-13 14:19:17,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29224215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:17,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572624748] [2024-11-13 14:19:17,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:17,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:17,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:17,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:17,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:19:17,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:17,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:19:17,776 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:17,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:18,086 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:18,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572624748] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:18,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:18,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-13 14:19:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990360728] [2024-11-13 14:19:18,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:18,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:19:18,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:18,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:19:18,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:19:18,088 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:19:18,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:18,189 INFO L93 Difference]: Finished difference Result 80 states and 83 transitions. [2024-11-13 14:19:18,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:19:18,191 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-11-13 14:19:18,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:18,191 INFO L225 Difference]: With dead ends: 80 [2024-11-13 14:19:18,193 INFO L226 Difference]: Without dead ends: 80 [2024-11-13 14:19:18,193 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:19:18,194 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:18,194 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 196 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:18,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-13 14:19:18,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2024-11-13 14:19:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 64 states have (on average 1.265625) internal successors, (81), 77 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2024-11-13 14:19:18,202 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 37 [2024-11-13 14:19:18,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:18,202 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2024-11-13 14:19:18,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:19:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2024-11-13 14:19:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:19:18,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:18,203 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:18,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:19:18,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:18,408 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:18,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:18,408 INFO L85 PathProgramCache]: Analyzing trace with hash 349789512, now seen corresponding path program 2 times [2024-11-13 14:19:18,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:18,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259090857] [2024-11-13 14:19:18,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:18,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:18,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:19,389 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:19,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:19,488 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:19,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:19,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259090857] [2024-11-13 14:19:19,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259090857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:19,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:19,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:19:19,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960351759] [2024-11-13 14:19:19,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:19,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:19:19,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:19,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:19:19,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:19,491 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:19,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:19,608 INFO L93 Difference]: Finished difference Result 90 states and 94 transitions. [2024-11-13 14:19:19,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:19:19,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2024-11-13 14:19:19,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:19,610 INFO L225 Difference]: With dead ends: 90 [2024-11-13 14:19:19,610 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 14:19:19,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:19,611 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 64 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:19,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 158 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:19,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 14:19:19,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2024-11-13 14:19:19,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 64 states have (on average 1.25) internal successors, (80), 76 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2024-11-13 14:19:19,624 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 43 [2024-11-13 14:19:19,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:19,624 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2024-11-13 14:19:19,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2024-11-13 14:19:19,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:19:19,625 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:19,626 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:19,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:19:19,626 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:19,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:19,630 INFO L85 PathProgramCache]: Analyzing trace with hash 988668321, now seen corresponding path program 1 times [2024-11-13 14:19:19,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:19,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340303954] [2024-11-13 14:19:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:19,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:19,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:20,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:20,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:20,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340303954] [2024-11-13 14:19:20,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340303954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:20,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:20,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:19:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785449785] [2024-11-13 14:19:20,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:20,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:19:20,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:20,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:19:20,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:20,229 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:20,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:20,374 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2024-11-13 14:19:20,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:19:20,375 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2024-11-13 14:19:20,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:20,375 INFO L225 Difference]: With dead ends: 99 [2024-11-13 14:19:20,376 INFO L226 Difference]: Without dead ends: 99 [2024-11-13 14:19:20,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:20,376 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 92 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:20,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 75 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:20,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-13 14:19:20,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2024-11-13 14:19:20,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 78 states have (on average 1.3076923076923077) internal successors, (102), 90 states have internal predecessors, (102), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:20,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2024-11-13 14:19:20,382 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 46 [2024-11-13 14:19:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:20,382 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2024-11-13 14:19:20,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:20,387 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2024-11-13 14:19:20,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 14:19:20,390 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:20,390 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:20,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 14:19:20,390 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:20,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash 583946254, now seen corresponding path program 1 times [2024-11-13 14:19:20,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:20,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809170209] [2024-11-13 14:19:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:20,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:20,645 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:20,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:20,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809170209] [2024-11-13 14:19:20,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809170209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:20,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:20,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:19:20,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217080326] [2024-11-13 14:19:20,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:20,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:19:20,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:19:20,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:19:20,683 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:20,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:20,778 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2024-11-13 14:19:20,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:19:20,779 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-11-13 14:19:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:20,780 INFO L225 Difference]: With dead ends: 92 [2024-11-13 14:19:20,780 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 14:19:20,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:19:20,781 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 30 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:20,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 73 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:20,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 14:19:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-13 14:19:20,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 78 states have (on average 1.294871794871795) internal successors, (101), 89 states have internal predecessors, (101), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:20,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2024-11-13 14:19:20,792 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 47 [2024-11-13 14:19:20,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:20,792 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2024-11-13 14:19:20,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:20,793 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2024-11-13 14:19:20,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 14:19:20,794 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:20,794 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:20,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 14:19:20,795 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:20,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:20,796 INFO L85 PathProgramCache]: Analyzing trace with hash 583946255, now seen corresponding path program 1 times [2024-11-13 14:19:20,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:20,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880261896] [2024-11-13 14:19:20,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:20,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:21,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:21,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:21,228 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:21,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:21,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880261896] [2024-11-13 14:19:21,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880261896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:21,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:21,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:19:21,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038243059] [2024-11-13 14:19:21,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:21,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:19:21,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:21,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:19:21,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:21,230 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:21,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:21,327 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2024-11-13 14:19:21,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:19:21,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2024-11-13 14:19:21,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:21,330 INFO L225 Difference]: With dead ends: 98 [2024-11-13 14:19:21,331 INFO L226 Difference]: Without dead ends: 98 [2024-11-13 14:19:21,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:21,331 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 58 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:21,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 154 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-13 14:19:21,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 92. [2024-11-13 14:19:21,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 78 states have (on average 1.2820512820512822) internal successors, (100), 89 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:21,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2024-11-13 14:19:21,343 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 47 [2024-11-13 14:19:21,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:21,344 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2024-11-13 14:19:21,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:21,344 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2024-11-13 14:19:21,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:19:21,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:21,345 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:21,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 14:19:21,345 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:21,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:21,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1467776939, now seen corresponding path program 1 times [2024-11-13 14:19:21,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:21,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871191756] [2024-11-13 14:19:21,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:21,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:21,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:21,759 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:21,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871191756] [2024-11-13 14:19:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871191756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:21,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:21,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:19:21,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096196225] [2024-11-13 14:19:21,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:21,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:19:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:21,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:19:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:21,773 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:21,837 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2024-11-13 14:19:21,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:19:21,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-13 14:19:21,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:21,839 INFO L225 Difference]: With dead ends: 91 [2024-11-13 14:19:21,839 INFO L226 Difference]: Without dead ends: 91 [2024-11-13 14:19:21,839 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:21,839 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 30 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:21,840 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 49 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:21,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-13 14:19:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-13 14:19:21,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 88 states have internal predecessors, (98), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2024-11-13 14:19:21,844 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 49 [2024-11-13 14:19:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:21,844 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2024-11-13 14:19:21,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2024-11-13 14:19:21,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:19:21,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:21,845 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:21,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 14:19:21,846 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:21,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:21,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1467776938, now seen corresponding path program 1 times [2024-11-13 14:19:21,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:21,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052204701] [2024-11-13 14:19:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:21,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:22,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:22,738 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:22,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:22,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052204701] [2024-11-13 14:19:22,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052204701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:22,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:22,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:19:22,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101447566] [2024-11-13 14:19:22,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:22,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:19:22,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:22,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:19:22,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:19:22,740 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:22,948 INFO L93 Difference]: Finished difference Result 96 states and 100 transitions. [2024-11-13 14:19:22,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:19:22,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-13 14:19:22,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:22,949 INFO L225 Difference]: With dead ends: 96 [2024-11-13 14:19:22,949 INFO L226 Difference]: Without dead ends: 96 [2024-11-13 14:19:22,950 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:19:22,950 INFO L432 NwaCegarLoop]: 30 mSDtfsCounter, 48 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:22,950 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 119 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:19:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-13 14:19:22,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2024-11-13 14:19:22,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 88 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:22,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2024-11-13 14:19:22,955 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 49 [2024-11-13 14:19:22,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:22,955 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2024-11-13 14:19:22,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2024-11-13 14:19:22,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:19:22,956 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:22,956 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:22,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 14:19:22,957 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:22,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:22,957 INFO L85 PathProgramCache]: Analyzing trace with hash 519275687, now seen corresponding path program 1 times [2024-11-13 14:19:22,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:22,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189813175] [2024-11-13 14:19:22,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:22,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:23,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:23,392 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:23,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:23,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189813175] [2024-11-13 14:19:23,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189813175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:23,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:23,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:19:23,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076807067] [2024-11-13 14:19:23,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:23,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:19:23,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:19:23,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:19:23,394 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:23,523 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2024-11-13 14:19:23,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:19:23,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-11-13 14:19:23,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:23,524 INFO L225 Difference]: With dead ends: 90 [2024-11-13 14:19:23,524 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 14:19:23,525 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:23,525 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 13 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:23,529 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 109 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:23,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 14:19:23,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-13 14:19:23,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 87 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2024-11-13 14:19:23,533 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 52 [2024-11-13 14:19:23,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:23,533 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2024-11-13 14:19:23,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:23,533 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2024-11-13 14:19:23,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:19:23,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:23,534 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:23,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 14:19:23,535 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:23,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:23,535 INFO L85 PathProgramCache]: Analyzing trace with hash 519275688, now seen corresponding path program 1 times [2024-11-13 14:19:23,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:23,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424747671] [2024-11-13 14:19:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:23,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:24,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:24,249 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:24,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:24,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424747671] [2024-11-13 14:19:24,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424747671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:24,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:24,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:19:24,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865914148] [2024-11-13 14:19:24,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:24,251 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:19:24,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:24,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:19:24,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:19:24,252 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:24,404 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2024-11-13 14:19:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:19:24,405 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-11-13 14:19:24,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:24,405 INFO L225 Difference]: With dead ends: 89 [2024-11-13 14:19:24,405 INFO L226 Difference]: Without dead ends: 89 [2024-11-13 14:19:24,406 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:24,406 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:24,406 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 104 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:24,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-13 14:19:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-13 14:19:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 86 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2024-11-13 14:19:24,410 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 52 [2024-11-13 14:19:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:24,410 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2024-11-13 14:19:24,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2024-11-13 14:19:24,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:19:24,411 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:24,411 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:24,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 14:19:24,411 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:24,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1620228375, now seen corresponding path program 1 times [2024-11-13 14:19:24,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:24,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100730719] [2024-11-13 14:19:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:24,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:24,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:24,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:24,589 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:24,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:24,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100730719] [2024-11-13 14:19:24,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100730719] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:24,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:24,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:19:24,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318737681] [2024-11-13 14:19:24,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:24,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:19:24,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:24,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:19:24,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:24,591 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:24,610 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2024-11-13 14:19:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:19:24,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2024-11-13 14:19:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:24,612 INFO L225 Difference]: With dead ends: 101 [2024-11-13 14:19:24,612 INFO L226 Difference]: Without dead ends: 101 [2024-11-13 14:19:24,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:24,613 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:24,614 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 88 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:19:24,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-11-13 14:19:24,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 91. [2024-11-13 14:19:24,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 80 states have (on average 1.1875) internal successors, (95), 88 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 97 transitions. [2024-11-13 14:19:24,618 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 97 transitions. Word has length 57 [2024-11-13 14:19:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:24,618 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 97 transitions. [2024-11-13 14:19:24,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 97 transitions. [2024-11-13 14:19:24,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:19:24,619 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:24,619 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:24,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 14:19:24,620 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:24,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:24,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1620178405, now seen corresponding path program 1 times [2024-11-13 14:19:24,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:24,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732742272] [2024-11-13 14:19:24,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:24,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:24,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:24,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:24,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732742272] [2024-11-13 14:19:24,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732742272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:24,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:24,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:19:24,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095964698] [2024-11-13 14:19:24,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:24,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:19:24,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:24,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:19:24,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:19:24,861 INFO L87 Difference]: Start difference. First operand 91 states and 97 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:24,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:24,971 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2024-11-13 14:19:24,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:19:24,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2024-11-13 14:19:24,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:24,973 INFO L225 Difference]: With dead ends: 90 [2024-11-13 14:19:24,973 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 14:19:24,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:19:24,973 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 6 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:24,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 118 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:24,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 14:19:24,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-13 14:19:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 80 states have (on average 1.1625) internal successors, (93), 87 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2024-11-13 14:19:24,977 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 57 [2024-11-13 14:19:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:24,977 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2024-11-13 14:19:24,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:24,977 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2024-11-13 14:19:24,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:19:24,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:24,978 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:24,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 14:19:24,979 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:24,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:24,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1620178404, now seen corresponding path program 1 times [2024-11-13 14:19:24,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:24,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349190192] [2024-11-13 14:19:24,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:24,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:25,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:25,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:25,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:25,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349190192] [2024-11-13 14:19:25,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349190192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:25,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:25,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:19:25,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008294585] [2024-11-13 14:19:25,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:25,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:19:25,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:25,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:19:25,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:19:25,827 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:25,999 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2024-11-13 14:19:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:19:25,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2024-11-13 14:19:26,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:26,000 INFO L225 Difference]: With dead ends: 98 [2024-11-13 14:19:26,000 INFO L226 Difference]: Without dead ends: 98 [2024-11-13 14:19:26,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:19:26,001 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:26,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 101 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:26,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-11-13 14:19:26,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2024-11-13 14:19:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 86 states have (on average 1.1627906976744187) internal successors, (100), 93 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:26,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2024-11-13 14:19:26,005 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 57 [2024-11-13 14:19:26,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:26,005 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2024-11-13 14:19:26,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:26,005 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2024-11-13 14:19:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:19:26,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:26,006 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:26,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 14:19:26,006 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:26,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 378634757, now seen corresponding path program 1 times [2024-11-13 14:19:26,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:26,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901288589] [2024-11-13 14:19:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:26,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:26,189 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:26,198 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:26,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:26,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901288589] [2024-11-13 14:19:26,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901288589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:26,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800887936] [2024-11-13 14:19:26,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:26,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:26,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:26,201 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:26,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:19:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:26,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:19:26,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:26,694 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:26,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800887936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:26,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:26,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-13 14:19:26,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387662297] [2024-11-13 14:19:26,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:26,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:19:26,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:26,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:19:26,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:19:26,732 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:26,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:26,776 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2024-11-13 14:19:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:19:26,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2024-11-13 14:19:26,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:26,778 INFO L225 Difference]: With dead ends: 123 [2024-11-13 14:19:26,778 INFO L226 Difference]: Without dead ends: 123 [2024-11-13 14:19:26,778 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:19:26,779 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 15 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:26,779 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 133 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:19:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-13 14:19:26,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2024-11-13 14:19:26,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 110 states have (on average 1.1818181818181819) internal successors, (130), 117 states have internal predecessors, (130), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2024-11-13 14:19:26,785 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 62 [2024-11-13 14:19:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:26,785 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2024-11-13 14:19:26,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:26,785 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2024-11-13 14:19:26,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:19:26,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:26,786 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:26,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:19:26,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:26,987 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:26,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:26,987 INFO L85 PathProgramCache]: Analyzing trace with hash 378684728, now seen corresponding path program 1 times [2024-11-13 14:19:26,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:26,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574661884] [2024-11-13 14:19:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:26,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:27,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:28,008 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:28,017 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:28,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:28,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574661884] [2024-11-13 14:19:28,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574661884] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:28,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253284028] [2024-11-13 14:19:28,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:28,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:28,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:28,020 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:28,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:19:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:28,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:19:28,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:28,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 14:19:28,610 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 23 treesize of output 1 [2024-11-13 14:19:28,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 14:19:28,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 9 [2024-11-13 14:19:28,937 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 36 treesize of output 12 [2024-11-13 14:19:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:28,977 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:29,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253284028] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:29,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:29,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-11-13 14:19:29,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993854623] [2024-11-13 14:19:29,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:29,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 14:19:29,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:29,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 14:19:29,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2024-11-13 14:19:29,364 INFO L87 Difference]: Start difference. First operand 120 states and 132 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:30,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:30,027 INFO L93 Difference]: Finished difference Result 119 states and 126 transitions. [2024-11-13 14:19:30,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:19:30,027 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2024-11-13 14:19:30,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:30,028 INFO L225 Difference]: With dead ends: 119 [2024-11-13 14:19:30,028 INFO L226 Difference]: Without dead ends: 119 [2024-11-13 14:19:30,029 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:19:30,029 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 30 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:30,030 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 290 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:19:30,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-13 14:19:30,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-13 14:19:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 110 states have (on average 1.1272727272727272) internal successors, (124), 116 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:30,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 126 transitions. [2024-11-13 14:19:30,034 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 126 transitions. Word has length 62 [2024-11-13 14:19:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:30,034 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 126 transitions. [2024-11-13 14:19:30,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 22 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 126 transitions. [2024-11-13 14:19:30,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 14:19:30,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:30,035 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:30,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:19:30,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:30,240 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:30,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:30,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1382975977, now seen corresponding path program 2 times [2024-11-13 14:19:30,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:30,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824446814] [2024-11-13 14:19:30,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:30,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:30,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:30,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:30,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824446814] [2024-11-13 14:19:30,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824446814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:30,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126573861] [2024-11-13 14:19:30,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:19:30,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:30,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:30,550 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:30,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:19:31,015 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:19:31,015 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:19:31,021 INFO L255 TraceCheckSpWp]: Trace formula consists of 1256 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:19:31,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:31,089 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:31,198 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:19:31,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126573861] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:31,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:31,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-13 14:19:31,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818477992] [2024-11-13 14:19:31,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:31,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:19:31,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:31,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:19:31,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:19:31,200 INFO L87 Difference]: Start difference. First operand 119 states and 126 transitions. Second operand has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:31,285 INFO L93 Difference]: Finished difference Result 188 states and 192 transitions. [2024-11-13 14:19:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:19:31,286 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2024-11-13 14:19:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:31,288 INFO L225 Difference]: With dead ends: 188 [2024-11-13 14:19:31,288 INFO L226 Difference]: Without dead ends: 188 [2024-11-13 14:19:31,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:19:31,289 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 23 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:31,290 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 303 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:19:31,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-13 14:19:31,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 179. [2024-11-13 14:19:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 170 states have (on average 1.1176470588235294) internal successors, (190), 176 states have internal predecessors, (190), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 192 transitions. [2024-11-13 14:19:31,298 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 192 transitions. Word has length 77 [2024-11-13 14:19:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:31,299 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 192 transitions. [2024-11-13 14:19:31,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:31,299 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 192 transitions. [2024-11-13 14:19:31,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 14:19:31,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:31,307 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:31,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:19:31,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:31,507 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:31,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:31,508 INFO L85 PathProgramCache]: Analyzing trace with hash -69902743, now seen corresponding path program 3 times [2024-11-13 14:19:31,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:31,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831919029] [2024-11-13 14:19:31,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:31,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:32,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:32,498 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:19:32,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:32,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831919029] [2024-11-13 14:19:32,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831919029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:32,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393067737] [2024-11-13 14:19:32,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:19:32,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:32,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:32,501 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:32,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:19:32,962 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:19:32,963 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:19:32,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-13 14:19:32,981 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:33,084 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:19:33,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 14:19:33,116 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:19:33,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 14:19:33,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:19:33,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-13 14:19:34,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:19:34,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-13 14:19:34,090 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:19:34,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 14:19:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:19:34,116 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:35,801 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:19:35,802 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 43 treesize of output 61 [2024-11-13 14:19:36,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2024-11-13 14:19:36,080 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-13 14:19:36,080 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 36 treesize of output 49 [2024-11-13 14:19:36,131 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:19:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393067737] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:36,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 20 [2024-11-13 14:19:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197819976] [2024-11-13 14:19:36,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:36,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:19:36,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:19:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:19:36,134 INFO L87 Difference]: Start difference. First operand 179 states and 192 transitions. Second operand has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:36,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:36,586 INFO L93 Difference]: Finished difference Result 237 states and 244 transitions. [2024-11-13 14:19:36,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:19:36,587 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2024-11-13 14:19:36,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:36,588 INFO L225 Difference]: With dead ends: 237 [2024-11-13 14:19:36,588 INFO L226 Difference]: Without dead ends: 237 [2024-11-13 14:19:36,589 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=503, Unknown=0, NotChecked=0, Total=702 [2024-11-13 14:19:36,590 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 234 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:36,590 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 237 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:19:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-13 14:19:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 120. [2024-11-13 14:19:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.0521739130434782) internal successors, (121), 117 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:36,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 123 transitions. [2024-11-13 14:19:36,596 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 123 transitions. Word has length 107 [2024-11-13 14:19:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:36,596 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 123 transitions. [2024-11-13 14:19:36,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.75) internal successors, (75), 21 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:36,597 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 123 transitions. [2024-11-13 14:19:36,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 14:19:36,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:36,601 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:36,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:19:36,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-13 14:19:36,801 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:36,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash 2127981639, now seen corresponding path program 1 times [2024-11-13 14:19:36,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:36,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746816125] [2024-11-13 14:19:36,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:36,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:37,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:19:37,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:37,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746816125] [2024-11-13 14:19:37,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746816125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:37,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481475844] [2024-11-13 14:19:37,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:37,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:37,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:37,751 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:37,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:19:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:38,264 INFO L255 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 14:19:38,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:38,350 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:19:38,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-13 14:19:38,356 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 19 treesize of output 14 [2024-11-13 14:19:38,394 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 23 treesize of output 1 [2024-11-13 14:19:38,518 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 12 treesize of output 4 [2024-11-13 14:19:38,783 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-13 14:19:38,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:39,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 45 [2024-11-13 14:19:39,272 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-11-13 14:19:39,272 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 36 treesize of output 49 [2024-11-13 14:19:39,318 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:19:39,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481475844] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:39,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:39,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 20 [2024-11-13 14:19:39,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460941499] [2024-11-13 14:19:39,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:39,319 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:19:39,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:39,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:19:39,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:19:39,321 INFO L87 Difference]: Start difference. First operand 120 states and 123 transitions. Second operand has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:39,772 INFO L93 Difference]: Finished difference Result 175 states and 179 transitions. [2024-11-13 14:19:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:19:39,773 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2024-11-13 14:19:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:39,774 INFO L225 Difference]: With dead ends: 175 [2024-11-13 14:19:39,774 INFO L226 Difference]: Without dead ends: 175 [2024-11-13 14:19:39,776 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:19:39,776 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 180 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:39,777 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 190 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:19:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-13 14:19:39,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 119. [2024-11-13 14:19:39,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 115 states have (on average 1.0434782608695652) internal successors, (120), 116 states have internal predecessors, (120), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:39,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 122 transitions. [2024-11-13 14:19:39,784 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 122 transitions. Word has length 108 [2024-11-13 14:19:39,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:39,785 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 122 transitions. [2024-11-13 14:19:39,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.0) internal successors, (80), 21 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:39,785 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 122 transitions. [2024-11-13 14:19:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 14:19:39,786 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:39,786 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:39,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:19:39,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-13 14:19:39,991 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:39,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:39,991 INFO L85 PathProgramCache]: Analyzing trace with hash 586509966, now seen corresponding path program 1 times [2024-11-13 14:19:39,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:39,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016294597] [2024-11-13 14:19:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:39,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:41,406 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-13 14:19:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:41,414 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:19:41,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:41,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016294597] [2024-11-13 14:19:41,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016294597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:41,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808162514] [2024-11-13 14:19:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:41,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:41,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:41,418 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:41,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:19:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:41,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 1455 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-13 14:19:41,992 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:42,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-13 14:19:42,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 14:19:42,075 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-13 14:19:42,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 14:19:42,354 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-13 14:19:42,354 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 [2024-11-13 14:19:42,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2024-11-13 14:19:42,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 14:19:43,012 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 17 treesize of output 9 [2024-11-13 14:19:44,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:19:44,587 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:19:44,588 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 63 [2024-11-13 14:19:44,614 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:19:44,614 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 [2024-11-13 14:19:44,723 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 361 trivial. 0 not checked. [2024-11-13 14:19:44,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:19:46,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:19:46,150 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 43 treesize of output 61 [2024-11-13 14:19:46,616 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:19:46,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808162514] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:19:46,616 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:19:46,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 7] total 24 [2024-11-13 14:19:46,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886482958] [2024-11-13 14:19:46,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:46,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 14:19:46,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:46,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 14:19:46,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=494, Unknown=0, NotChecked=0, Total=600 [2024-11-13 14:19:46,618 INFO L87 Difference]: Start difference. First operand 119 states and 122 transitions. Second operand has 25 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 25 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:47,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:47,842 INFO L93 Difference]: Finished difference Result 235 states and 241 transitions. [2024-11-13 14:19:47,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:19:47,843 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 25 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 110 [2024-11-13 14:19:47,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:47,845 INFO L225 Difference]: With dead ends: 235 [2024-11-13 14:19:47,845 INFO L226 Difference]: Without dead ends: 235 [2024-11-13 14:19:47,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 206 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=249, Invalid=873, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:19:47,846 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 298 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:47,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 345 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:19:47,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2024-11-13 14:19:47,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 114. [2024-11-13 14:19:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 111 states have (on average 1.0360360360360361) internal successors, (115), 111 states have internal predecessors, (115), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 117 transitions. [2024-11-13 14:19:47,853 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 117 transitions. Word has length 110 [2024-11-13 14:19:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:47,854 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 117 transitions. [2024-11-13 14:19:47,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5833333333333335) internal successors, (86), 25 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 117 transitions. [2024-11-13 14:19:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 14:19:47,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:47,855 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:47,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:19:48,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-13 14:19:48,059 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:48,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:48,059 INFO L85 PathProgramCache]: Analyzing trace with hash 431612363, now seen corresponding path program 1 times [2024-11-13 14:19:48,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:48,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868470854] [2024-11-13 14:19:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:48,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:48,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:19:48,230 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:19:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:19:48,492 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:19:48,493 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:19:48,494 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONUNSUPPORTED_FEATURE (37 of 38 remaining) [2024-11-13 14:19:48,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 38 remaining) [2024-11-13 14:19:48,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 38 remaining) [2024-11-13 14:19:48,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 38 remaining) [2024-11-13 14:19:48,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 38 remaining) [2024-11-13 14:19:48,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 38 remaining) [2024-11-13 14:19:48,497 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 38 remaining) [2024-11-13 14:19:48,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 38 remaining) [2024-11-13 14:19:48,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 38 remaining) [2024-11-13 14:19:48,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 38 remaining) [2024-11-13 14:19:48,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 38 remaining) [2024-11-13 14:19:48,498 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 38 remaining) [2024-11-13 14:19:48,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 38 remaining) [2024-11-13 14:19:48,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 38 remaining) [2024-11-13 14:19:48,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 38 remaining) [2024-11-13 14:19:48,499 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 38 remaining) [2024-11-13 14:19:48,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 38 remaining) [2024-11-13 14:19:48,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 38 remaining) [2024-11-13 14:19:48,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 38 remaining) [2024-11-13 14:19:48,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 38 remaining) [2024-11-13 14:19:48,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 38 remaining) [2024-11-13 14:19:48,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 38 remaining) [2024-11-13 14:19:48,500 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 38 remaining) [2024-11-13 14:19:48,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 38 remaining) [2024-11-13 14:19:48,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 38 remaining) [2024-11-13 14:19:48,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE (12 of 38 remaining) [2024-11-13 14:19:48,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE (11 of 38 remaining) [2024-11-13 14:19:48,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_FREE (10 of 38 remaining) [2024-11-13 14:19:48,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_FREE (9 of 38 remaining) [2024-11-13 14:19:48,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE (8 of 38 remaining) [2024-11-13 14:19:48,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE (7 of 38 remaining) [2024-11-13 14:19:48,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE (6 of 38 remaining) [2024-11-13 14:19:48,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (5 of 38 remaining) [2024-11-13 14:19:48,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (4 of 38 remaining) [2024-11-13 14:19:48,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (3 of 38 remaining) [2024-11-13 14:19:48,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE (2 of 38 remaining) [2024-11-13 14:19:48,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE (1 of 38 remaining) [2024-11-13 14:19:48,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_LEAK (0 of 38 remaining) [2024-11-13 14:19:48,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 14:19:48,507 INFO L407 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:19:48,597 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:19:48,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:19:48 BoogieIcfgContainer [2024-11-13 14:19:48,601 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:19:48,602 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:19:48,602 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:19:48,602 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:19:48,603 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:08" (3/4) ... [2024-11-13 14:19:48,606 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 14:19:48,607 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:19:48,607 INFO L158 Benchmark]: Toolchain (without parser) took 43421.79ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 88.6MB in the beginning and 44.7MB in the end (delta: 43.8MB). Peak memory consumption was 99.4MB. Max. memory is 16.1GB. [2024-11-13 14:19:48,608 INFO L158 Benchmark]: CDTParser took 0.40ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:19:48,608 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1579.33ms. Allocated memory is still 117.4MB. Free memory was 88.6MB in the beginning and 73.0MB in the end (delta: 15.6MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. [2024-11-13 14:19:48,608 INFO L158 Benchmark]: Boogie Procedure Inliner took 114.98ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 67.4MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:19:48,608 INFO L158 Benchmark]: Boogie Preprocessor took 158.83ms. Allocated memory is still 117.4MB. Free memory was 67.4MB in the beginning and 61.1MB in the end (delta: 6.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:19:48,612 INFO L158 Benchmark]: RCFGBuilder took 1474.92ms. Allocated memory is still 117.4MB. Free memory was 61.1MB in the beginning and 41.6MB in the end (delta: 19.5MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2024-11-13 14:19:48,613 INFO L158 Benchmark]: TraceAbstraction took 40077.28ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 41.1MB in the beginning and 44.7MB in the end (delta: -3.7MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. [2024-11-13 14:19:48,613 INFO L158 Benchmark]: Witness Printer took 5.08ms. Allocated memory is still 167.8MB. Free memory was 44.7MB in the beginning and 44.7MB in the end (delta: 6.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:19:48,614 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1579.33ms. Allocated memory is still 117.4MB. Free memory was 88.6MB in the beginning and 73.0MB in the end (delta: 15.6MB). Peak memory consumption was 68.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 114.98ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 67.4MB in the end (delta: 5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 158.83ms. Allocated memory is still 117.4MB. Free memory was 67.4MB in the beginning and 61.1MB in the end (delta: 6.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1474.92ms. Allocated memory is still 117.4MB. Free memory was 61.1MB in the beginning and 41.6MB in the end (delta: 19.5MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. * TraceAbstraction took 40077.28ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 41.1MB in the beginning and 44.7MB in the end (delta: -3.7MB). Peak memory consumption was 51.4MB. Max. memory is 16.1GB. * Witness Printer took 5.08ms. Allocated memory is still 167.8MB. Free memory was 44.7MB in the beginning and 44.7MB in the end (delta: 6.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1774]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: overapproximation of fflush at line 1774. Possible FailurePath: [L1763] static const char *applet_name; [L1764] static signed int bb_errno_location; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; [L1795] static struct utmp dummy_utmp; VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1858] char *a = malloc(11); [L1859] a[10] = 0 VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] int i=0; VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=0] [L1860] COND TRUE i<10 [L1861] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=1] [L1860] COND TRUE i<10 [L1861] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=2] [L1860] COND TRUE i<10 [L1861] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=3] [L1860] COND TRUE i<10 [L1861] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=4] [L1860] COND TRUE i<10 [L1861] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=5] [L1860] COND TRUE i<10 [L1861] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=6] [L1860] COND TRUE i<10 [L1861] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=7] [L1860] COND TRUE i<10 [L1861] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=8] [L1860] COND TRUE i<10 [L1861] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=9] [L1860] COND TRUE i<10 [L1861] a[i]=__VERIFIER_nondet_char() VAL [applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1860] ++i VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}, i=10] [L1860] COND FALSE !(i<10) VAL [a={-1:0}, applet_name={0:0}, bb_errno_location=0, dummy_utmp={3:0}] [L1862] applet_name = a [L1863] bb_errno_location = __VERIFIER_nondet_int() [L1864] optind = 1 [L1865] int argc = __VERIFIER_nondet_int(); [L1866] CALL assume_abort_if_not(argc >= 1 && argc <= 10000) VAL [\old(cond)=1, applet_name={-1:0}, bb_errno_location=0, dummy_utmp={3:0}, optind=1] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, applet_name={-1:0}, bb_errno_location=0, dummy_utmp={3:0}, optind=1] [L1866] RET assume_abort_if_not(argc >= 1 && argc <= 10000) VAL [a={-1:0}, applet_name={-1:0}, argc=1, bb_errno_location=0, dummy_utmp={3:0}, optind=1] [L1867] char **argv=malloc((argc+1)*sizeof(char*)); [L1868] char **mem_track=malloc((argc+1)*sizeof(char*)); [L1869] argv[argc]=0 VAL [applet_name={-1:0}, bb_errno_location=0, dummy_utmp={3:0}, optind=1] [L1870] int i=0; VAL [a={-1:0}, applet_name={-1:0}, argc=1, argv={-12:0}, bb_errno_location=0, dummy_utmp={3:0}, i=0, mem_track={-13:0}, optind=1] [L1870] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ff8320881bb5cbc5b52aa5a0a8dd146a23603ac32480303b1494fa48d4d27d8 [2024-11-13 14:19:51,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:19:51,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:19:51,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:19:51,990 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:19:51,990 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:19:51,992 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/busybox-1.22.0/hostid.i Unable to find full path for "g++" [2024-11-13 14:19:53,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:19:54,415 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:19:54,419 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/sv-benchmarks/c/busybox-1.22.0/hostid.i [2024-11-13 14:19:54,451 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/data/149e50652/a7d39ec9619f4634894f3bfa2bd21a61/FLAG2e994afb7 [2024-11-13 14:19:54,478 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/data/149e50652/a7d39ec9619f4634894f3bfa2bd21a61 [2024-11-13 14:19:54,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:19:54,482 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:19:54,483 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:19:54,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:19:54,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:19:54,486 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:19:54" (1/1) ... [2024-11-13 14:19:54,487 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673fa4b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:54, skipping insertion in model container [2024-11-13 14:19:54,487 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:19:54" (1/1) ... [2024-11-13 14:19:54,548 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:19:55,361 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:19:55,364 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:19:55,382 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:19:55,394 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:19:55,424 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:19:55,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:19:55,857 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:19:55,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55 WrapperNode [2024-11-13 14:19:55,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:19:55,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:19:55,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:19:55,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:19:55,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:55,900 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:55,950 INFO L138 Inliner]: procedures = 531, calls = 407, calls flagged for inlining = 7, calls inlined = 6, statements flattened = 487 [2024-11-13 14:19:55,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:19:55,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:19:55,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:19:55,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:19:55,961 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:55,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:55,976 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:56,023 INFO L175 MemorySlicer]: Split 369 memory accesses to 6 slices as follows [2, 355, 2, 2, 6, 2]. 96 percent of accesses are in the largest equivalence class. The 357 initializations are split as follows [2, 355, 0, 0, 0, 0]. The 7 writes are split as follows [0, 0, 2, 1, 2, 2]. [2024-11-13 14:19:56,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:56,027 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:56,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:56,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:56,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:56,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:56,124 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:19:56,125 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:19:56,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:19:56,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:19:56,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (1/1) ... [2024-11-13 14:19:56,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:19:56,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:56,167 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:19:56,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:19:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:19:56,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#0 [2024-11-13 14:19:56,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#1 [2024-11-13 14:19:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#2 [2024-11-13 14:19:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#3 [2024-11-13 14:19:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#4 [2024-11-13 14:19:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2#5 [2024-11-13 14:19:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 14:19:56,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 14:19:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 14:19:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-13 14:19:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-13 14:19:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#5 [2024-11-13 14:19:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-13 14:19:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-13 14:19:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-13 14:19:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-13 14:19:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2024-11-13 14:19:56,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#5 [2024-11-13 14:19:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:19:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:19:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:19:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:19:56,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:19:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 14:19:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-13 14:19:56,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-13 14:19:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:19:56,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:19:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 14:19:56,206 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 14:19:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:19:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:19:56,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:19:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 14:19:56,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-13 14:19:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-13 14:19:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2024-11-13 14:19:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2024-11-13 14:19:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2024-11-13 14:19:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2024-11-13 14:19:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2024-11-13 14:19:56,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#5 [2024-11-13 14:19:56,680 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:19:56,682 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:19:57,859 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2024-11-13 14:19:57,860 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:19:57,876 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:19:57,877 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 14:19:57,878 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:57 BoogieIcfgContainer [2024-11-13 14:19:57,878 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:19:57,881 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:19:57,882 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:19:57,888 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:19:57,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:19:54" (1/3) ... [2024-11-13 14:19:57,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd639e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:19:57, skipping insertion in model container [2024-11-13 14:19:57,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:19:55" (2/3) ... [2024-11-13 14:19:57,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd639e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:19:57, skipping insertion in model container [2024-11-13 14:19:57,890 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:19:57" (3/3) ... [2024-11-13 14:19:57,891 INFO L112 eAbstractionObserver]: Analyzing ICFG hostid.i [2024-11-13 14:19:57,908 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:19:57,910 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG hostid.i that has 2 procedures, 96 locations, 1 initial locations, 5 loop locations, and 38 error locations. [2024-11-13 14:19:57,962 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:19:57,979 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f1741ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:19:57,979 INFO L334 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2024-11-13 14:19:57,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 55 states have (on average 1.8909090909090909) internal successors, (104), 93 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:57,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 14:19:57,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:57,993 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 14:19:57,993 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:58,000 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:58,000 INFO L85 PathProgramCache]: Analyzing trace with hash 37801, now seen corresponding path program 1 times [2024-11-13 14:19:58,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:19:58,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [946114237] [2024-11-13 14:19:58,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:58,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:58,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:58,024 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:58,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:19:58,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:19:58,920 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:19:58,925 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:58,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:19:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:19:59,013 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:19:59,014 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:19:59,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946114237] [2024-11-13 14:19:59,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946114237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:19:59,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:19:59,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:19:59,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804017827] [2024-11-13 14:19:59,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:19:59,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:19:59,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:19:59,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:19:59,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:59,054 INFO L87 Difference]: Start difference. First operand has 96 states, 55 states have (on average 1.8909090909090909) internal successors, (104), 93 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:59,353 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2024-11-13 14:19:59,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:19:59,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-13 14:19:59,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:59,362 INFO L225 Difference]: With dead ends: 59 [2024-11-13 14:19:59,363 INFO L226 Difference]: Without dead ends: 59 [2024-11-13 14:19:59,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:19:59,369 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 51 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:59,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 40 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:19:59,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-13 14:19:59,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-13 14:19:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.6666666666666667) internal successors, (60), 56 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:19:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2024-11-13 14:19:59,407 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 3 [2024-11-13 14:19:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:59,408 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2024-11-13 14:19:59,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:19:59,408 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2024-11-13 14:19:59,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 14:19:59,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:59,408 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 14:19:59,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:19:59,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:59,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:19:59,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:59,611 INFO L85 PathProgramCache]: Analyzing trace with hash 37802, now seen corresponding path program 1 times [2024-11-13 14:19:59,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:19:59,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [876737110] [2024-11-13 14:19:59,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:59,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:59,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:59,621 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:59,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:20:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:00,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:20:00,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:00,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:20:00,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:00,513 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:00,514 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:00,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876737110] [2024-11-13 14:20:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876737110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:00,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:00,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:20:00,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254641475] [2024-11-13 14:20:00,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:00,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:20:00,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:00,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:20:00,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:20:00,520 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:20:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:00,877 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2024-11-13 14:20:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:20:00,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2024-11-13 14:20:00,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:00,879 INFO L225 Difference]: With dead ends: 58 [2024-11-13 14:20:00,879 INFO L226 Difference]: Without dead ends: 58 [2024-11-13 14:20:00,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:20:00,881 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 7 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:00,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 85 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:20:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-13 14:20:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-11-13 14:20:00,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 36 states have (on average 1.6388888888888888) internal successors, (59), 55 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2024-11-13 14:20:00,887 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 3 [2024-11-13 14:20:00,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:00,887 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2024-11-13 14:20:00,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:20:00,887 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2024-11-13 14:20:00,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 14:20:00,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:00,888 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 14:20:00,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:20:01,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:01,089 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:01,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:01,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1126113961, now seen corresponding path program 1 times [2024-11-13 14:20:01,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:01,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [643673911] [2024-11-13 14:20:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:01,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:01,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:01,094 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:01,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:20:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:01,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:20:01,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:01,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:20:02,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:02,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:02,006 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:02,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643673911] [2024-11-13 14:20:02,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643673911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:02,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:02,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:20:02,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951132834] [2024-11-13 14:20:02,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:02,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:20:02,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:20:02,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:20:02,007 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-13 14:20:02,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:02,334 INFO L93 Difference]: Finished difference Result 61 states and 64 transitions. [2024-11-13 14:20:02,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:20:02,335 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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 [2024-11-13 14:20:02,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:02,336 INFO L225 Difference]: With dead ends: 61 [2024-11-13 14:20:02,336 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 14:20:02,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:20:02,337 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 8 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:02,338 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:20:02,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 14:20:02,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2024-11-13 14:20:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 38 states have (on average 1.605263157894737) internal successors, (61), 57 states have internal predecessors, (61), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2024-11-13 14:20:02,344 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 6 [2024-11-13 14:20:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:02,344 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2024-11-13 14:20:02,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 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) [2024-11-13 14:20:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2024-11-13 14:20:02,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 14:20:02,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:02,345 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:02,372 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:20:02,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:02,545 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:02,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:02,546 INFO L85 PathProgramCache]: Analyzing trace with hash 71429206, now seen corresponding path program 1 times [2024-11-13 14:20:02,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:02,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1366645884] [2024-11-13 14:20:02,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:02,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:02,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:02,548 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:02,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:20:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:03,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:20:03,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:03,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:20:03,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:03,493 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:20:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:03,943 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:03,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366645884] [2024-11-13 14:20:03,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366645884] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:20:03,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:20:03,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-13 14:20:03,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458795823] [2024-11-13 14:20:03,944 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:20:03,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:20:03,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:03,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:20:03,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:20:03,945 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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) [2024-11-13 14:20:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:05,099 INFO L93 Difference]: Finished difference Result 64 states and 67 transitions. [2024-11-13 14:20:05,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:20:05,100 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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 9 [2024-11-13 14:20:05,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:05,101 INFO L225 Difference]: With dead ends: 64 [2024-11-13 14:20:05,101 INFO L226 Difference]: Without dead ends: 64 [2024-11-13 14:20:05,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:20:05,102 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 16 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:05,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 169 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:20:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-13 14:20:05,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-13 14:20:05,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 61 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2024-11-13 14:20:05,110 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 9 [2024-11-13 14:20:05,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:05,110 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2024-11-13 14:20:05,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 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) [2024-11-13 14:20:05,110 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2024-11-13 14:20:05,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:20:05,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:05,111 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:05,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:20:05,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:05,312 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:05,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:05,312 INFO L85 PathProgramCache]: Analyzing trace with hash 470149178, now seen corresponding path program 1 times [2024-11-13 14:20:05,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:05,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889723360] [2024-11-13 14:20:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:05,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:05,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:05,316 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:05,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:20:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:06,189 INFO L255 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:20:06,192 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:06,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:20:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:06,507 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:20:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:07,055 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:07,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889723360] [2024-11-13 14:20:07,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889723360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:20:07,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:20:07,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-13 14:20:07,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734540053] [2024-11-13 14:20:07,056 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:20:07,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-13 14:20:07,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:07,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-13 14:20:07,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-13 14:20:07,058 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:20:08,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:08,203 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2024-11-13 14:20:08,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:20:08,205 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2024-11-13 14:20:08,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:08,206 INFO L225 Difference]: With dead ends: 79 [2024-11-13 14:20:08,206 INFO L226 Difference]: Without dead ends: 79 [2024-11-13 14:20:08,207 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:20:08,208 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 37 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:08,208 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 272 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:20:08,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-13 14:20:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-13 14:20:08,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 76 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2024-11-13 14:20:08,214 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 22 [2024-11-13 14:20:08,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:08,214 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2024-11-13 14:20:08,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:20:08,215 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2024-11-13 14:20:08,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:20:08,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:08,216 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:08,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:20:08,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:08,416 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:08,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:08,417 INFO L85 PathProgramCache]: Analyzing trace with hash -405799385, now seen corresponding path program 2 times [2024-11-13 14:20:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:08,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2088484991] [2024-11-13 14:20:08,418 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:20:08,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:08,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:08,421 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:08,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:20:09,205 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:20:09,205 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:20:09,281 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:20:09,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:09,319 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 14:20:09,319 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 1 case distinctions, treesize of input 9 treesize of output 15 [2024-11-13 14:20:09,350 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-13 14:20:09,350 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:09,350 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:09,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088484991] [2024-11-13 14:20:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088484991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:09,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:09,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:20:09,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301785426] [2024-11-13 14:20:09,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:09,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:20:09,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:09,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:20:09,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:20:09,351 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:09,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:09,760 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2024-11-13 14:20:09,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:20:09,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2024-11-13 14:20:09,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:09,761 INFO L225 Difference]: With dead ends: 74 [2024-11-13 14:20:09,762 INFO L226 Difference]: Without dead ends: 74 [2024-11-13 14:20:09,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:20:09,762 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:09,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 45 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:20:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-11-13 14:20:09,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-11-13 14:20:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 58 states have (on average 1.293103448275862) internal successors, (75), 71 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2024-11-13 14:20:09,771 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 37 [2024-11-13 14:20:09,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:09,772 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2024-11-13 14:20:09,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:09,773 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2024-11-13 14:20:09,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:20:09,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:09,775 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:09,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:20:09,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:09,975 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:09,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:09,976 INFO L85 PathProgramCache]: Analyzing trace with hash -405799384, now seen corresponding path program 1 times [2024-11-13 14:20:09,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:09,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090968253] [2024-11-13 14:20:09,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:09,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:09,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:09,979 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:09,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:20:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:10,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:20:10,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:10,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:20:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:11,504 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:20:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:20:14,310 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:14,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090968253] [2024-11-13 14:20:14,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090968253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:20:14,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:20:14,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2024-11-13 14:20:14,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034184548] [2024-11-13 14:20:14,311 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:20:14,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:20:14,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:14,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:20:14,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=393, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:20:14,313 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:20:19,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:19,802 INFO L93 Difference]: Finished difference Result 104 states and 108 transitions. [2024-11-13 14:20:19,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 14:20:19,803 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-11-13 14:20:19,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:19,804 INFO L225 Difference]: With dead ends: 104 [2024-11-13 14:20:19,804 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 14:20:19,804 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=354, Invalid=836, Unknown=0, NotChecked=0, Total=1190 [2024-11-13 14:20:19,805 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:19,805 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 430 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-13 14:20:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 14:20:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2024-11-13 14:20:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 101 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 108 transitions. [2024-11-13 14:20:19,815 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 108 transitions. Word has length 37 [2024-11-13 14:20:19,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:19,815 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 108 transitions. [2024-11-13 14:20:19,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.75) internal successors, (66), 24 states have internal predecessors, (66), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:20:19,815 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 108 transitions. [2024-11-13 14:20:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:20:19,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:19,816 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:19,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 14:20:20,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:20,017 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:20,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:20,017 INFO L85 PathProgramCache]: Analyzing trace with hash 349789512, now seen corresponding path program 2 times [2024-11-13 14:20:20,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:20,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250400113] [2024-11-13 14:20:20,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:20:20,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:20,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:20,021 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:20,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:20:20,831 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:20:20,831 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:20:20,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:20:20,914 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:21,011 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-13 14:20:21,011 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 1 case distinctions, treesize of input 19 treesize of output 21 [2024-11-13 14:20:21,122 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:21,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:21,122 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250400113] [2024-11-13 14:20:21,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250400113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:21,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:20:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619229986] [2024-11-13 14:20:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:21,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:20:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:20:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:20:21,124 INFO L87 Difference]: Start difference. First operand 104 states and 108 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:21,788 INFO L93 Difference]: Finished difference Result 114 states and 119 transitions. [2024-11-13 14:20:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:20:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2024-11-13 14:20:21,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:21,793 INFO L225 Difference]: With dead ends: 114 [2024-11-13 14:20:21,793 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 14:20:21,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:20:21,794 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 64 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:21,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 158 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:20:21,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 14:20:21,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 103. [2024-11-13 14:20:21,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 100 states have internal predecessors, (105), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:21,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 107 transitions. [2024-11-13 14:20:21,805 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 107 transitions. Word has length 43 [2024-11-13 14:20:21,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:21,805 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 107 transitions. [2024-11-13 14:20:21,805 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:21,805 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 107 transitions. [2024-11-13 14:20:21,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:20:21,806 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:21,806 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:21,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:20:22,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:22,007 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:22,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:22,007 INFO L85 PathProgramCache]: Analyzing trace with hash 988668321, now seen corresponding path program 1 times [2024-11-13 14:20:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:22,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [875929011] [2024-11-13 14:20:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:22,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:22,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:22,010 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:22,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:20:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:22,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:20:22,868 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:23,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:20:23,177 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 19 treesize of output 14 [2024-11-13 14:20:23,222 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:20:23,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:20:23,322 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:23,322 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:23,322 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:23,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875929011] [2024-11-13 14:20:23,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875929011] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:23,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:23,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:20:23,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142317180] [2024-11-13 14:20:23,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:23,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:20:23,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:23,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:20:23,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:20:23,324 INFO L87 Difference]: Start difference. First operand 103 states and 107 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:24,149 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2024-11-13 14:20:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:20:24,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2024-11-13 14:20:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:24,151 INFO L225 Difference]: With dead ends: 123 [2024-11-13 14:20:24,151 INFO L226 Difference]: Without dead ends: 123 [2024-11-13 14:20:24,151 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:20:24,152 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 186 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:24,152 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 104 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:20:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-13 14:20:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 117. [2024-11-13 14:20:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 102 states have (on average 1.2352941176470589) internal successors, (126), 114 states have internal predecessors, (126), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:24,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2024-11-13 14:20:24,158 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 46 [2024-11-13 14:20:24,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:24,158 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2024-11-13 14:20:24,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:24,158 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2024-11-13 14:20:24,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:20:24,159 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:24,159 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:24,192 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:20:24,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:24,360 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:24,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:24,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1467776939, now seen corresponding path program 1 times [2024-11-13 14:20:24,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:24,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851674076] [2024-11-13 14:20:24,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:24,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:24,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:24,364 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:24,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:20:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:25,294 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:20:25,299 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:25,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:20:25,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:20:25,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 1 [2024-11-13 14:20:25,382 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 14:20:25,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-13 14:20:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:25,422 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:25,422 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:25,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851674076] [2024-11-13 14:20:25,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851674076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:25,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:25,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:20:25,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209680430] [2024-11-13 14:20:25,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:25,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:20:25,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:25,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:20:25,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:20:25,424 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:25,672 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2024-11-13 14:20:25,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:20:25,672 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-13 14:20:25,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:25,673 INFO L225 Difference]: With dead ends: 116 [2024-11-13 14:20:25,673 INFO L226 Difference]: Without dead ends: 116 [2024-11-13 14:20:25,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:20:25,674 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 31 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:25,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 49 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:20:25,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-13 14:20:25,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2024-11-13 14:20:25,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 102 states have (on average 1.2156862745098038) internal successors, (124), 113 states have internal predecessors, (124), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 126 transitions. [2024-11-13 14:20:25,679 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 126 transitions. Word has length 49 [2024-11-13 14:20:25,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:25,679 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 126 transitions. [2024-11-13 14:20:25,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:25,680 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 126 transitions. [2024-11-13 14:20:25,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:20:25,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:25,681 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:25,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:20:25,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:25,881 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:25,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:25,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1467776938, now seen corresponding path program 1 times [2024-11-13 14:20:25,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:25,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484797092] [2024-11-13 14:20:25,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:25,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:25,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:25,884 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:25,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:20:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:26,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:20:26,810 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:26,894 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 11 treesize of output 10 [2024-11-13 14:20:26,910 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:20:26,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:20:26,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 1 [2024-11-13 14:20:27,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:20:27,171 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 19 treesize of output 14 [2024-11-13 14:20:27,186 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:20:27,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:20:27,386 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:27,386 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:27,386 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484797092] [2024-11-13 14:20:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484797092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:27,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:27,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:20:27,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421188038] [2024-11-13 14:20:27,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:27,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:20:27,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:20:27,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:20:27,388 INFO L87 Difference]: Start difference. First operand 116 states and 126 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:28,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:28,444 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2024-11-13 14:20:28,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:20:28,445 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-13 14:20:28,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:28,448 INFO L225 Difference]: With dead ends: 121 [2024-11-13 14:20:28,449 INFO L226 Difference]: Without dead ends: 121 [2024-11-13 14:20:28,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:20:28,450 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 142 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:28,450 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 104 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:20:28,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-13 14:20:28,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 116. [2024-11-13 14:20:28,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 102 states have (on average 1.2058823529411764) internal successors, (123), 113 states have internal predecessors, (123), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:28,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 125 transitions. [2024-11-13 14:20:28,463 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 125 transitions. Word has length 49 [2024-11-13 14:20:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:28,464 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 125 transitions. [2024-11-13 14:20:28,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 125 transitions. [2024-11-13 14:20:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:20:28,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:28,465 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:28,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:20:28,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:28,665 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:28,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:28,666 INFO L85 PathProgramCache]: Analyzing trace with hash 519275687, now seen corresponding path program 1 times [2024-11-13 14:20:28,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:28,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149352563] [2024-11-13 14:20:28,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:28,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:28,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:28,669 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:28,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:20:29,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:29,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:20:29,458 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:29,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:20:29,489 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 25 treesize of output 1 [2024-11-13 14:20:29,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-11-13 14:20:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:29,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:29,572 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:29,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149352563] [2024-11-13 14:20:29,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149352563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:29,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:29,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:20:29,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326314333] [2024-11-13 14:20:29,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:29,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:20:29,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:29,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:20:29,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:20:29,574 INFO L87 Difference]: Start difference. First operand 116 states and 125 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:30,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:30,102 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2024-11-13 14:20:30,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:20:30,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-11-13 14:20:30,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:30,105 INFO L225 Difference]: With dead ends: 115 [2024-11-13 14:20:30,105 INFO L226 Difference]: Without dead ends: 115 [2024-11-13 14:20:30,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:20:30,106 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:30,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 110 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:20:30,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-13 14:20:30,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-13 14:20:30,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 112 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:30,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 123 transitions. [2024-11-13 14:20:30,111 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 123 transitions. Word has length 52 [2024-11-13 14:20:30,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:30,111 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 123 transitions. [2024-11-13 14:20:30,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:30,112 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 123 transitions. [2024-11-13 14:20:30,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:20:30,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:30,112 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:30,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 14:20:30,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:30,313 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:30,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:30,314 INFO L85 PathProgramCache]: Analyzing trace with hash 519275688, now seen corresponding path program 1 times [2024-11-13 14:20:30,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:30,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [746687450] [2024-11-13 14:20:30,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:30,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:30,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:30,316 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:30,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:20:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:31,090 INFO L255 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:20:31,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:31,103 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:20:31,158 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 25 treesize of output 1 [2024-11-13 14:20:31,167 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 16 treesize of output 12 [2024-11-13 14:20:31,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2024-11-13 14:20:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:31,311 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:31,311 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:31,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746687450] [2024-11-13 14:20:31,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746687450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:31,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:31,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:20:31,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412973001] [2024-11-13 14:20:31,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:31,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:20:31,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:31,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:20:31,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:20:31,313 INFO L87 Difference]: Start difference. First operand 115 states and 123 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:31,826 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2024-11-13 14:20:31,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:20:31,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-11-13 14:20:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:31,828 INFO L225 Difference]: With dead ends: 114 [2024-11-13 14:20:31,828 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 14:20:31,828 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:20:31,828 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:31,829 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 108 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:20:31,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 14:20:31,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-13 14:20:31,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 111 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:31,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2024-11-13 14:20:31,832 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 52 [2024-11-13 14:20:31,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:31,833 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2024-11-13 14:20:31,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:31,833 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2024-11-13 14:20:31,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:20:31,834 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:31,834 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:31,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 14:20:32,034 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:32,035 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:32,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1620228375, now seen corresponding path program 1 times [2024-11-13 14:20:32,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:32,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001786270] [2024-11-13 14:20:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:32,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:32,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:32,037 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:32,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:20:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:32,894 INFO L255 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:20:32,896 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:32,916 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:32,916 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:32,916 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:32,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001786270] [2024-11-13 14:20:32,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001786270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:32,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:32,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:20:32,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099601246] [2024-11-13 14:20:32,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:32,918 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:20:32,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:32,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:20:32,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:20:32,919 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:32,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:32,997 INFO L93 Difference]: Finished difference Result 126 states and 136 transitions. [2024-11-13 14:20:32,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:20:32,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2024-11-13 14:20:32,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:33,000 INFO L225 Difference]: With dead ends: 126 [2024-11-13 14:20:33,000 INFO L226 Difference]: Without dead ends: 126 [2024-11-13 14:20:33,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:20:33,001 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 6 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:33,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 90 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:20:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-13 14:20:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 116. [2024-11-13 14:20:33,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 104 states have (on average 1.1634615384615385) internal successors, (121), 113 states have internal predecessors, (121), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 123 transitions. [2024-11-13 14:20:33,006 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 123 transitions. Word has length 57 [2024-11-13 14:20:33,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:33,006 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 123 transitions. [2024-11-13 14:20:33,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:33,006 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 123 transitions. [2024-11-13 14:20:33,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:20:33,007 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:33,007 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:33,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 14:20:33,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:33,208 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:33,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:33,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1620178405, now seen corresponding path program 1 times [2024-11-13 14:20:33,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:33,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184562502] [2024-11-13 14:20:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:33,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:33,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:33,211 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:33,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:20:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:34,020 INFO L255 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:20:34,021 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:34,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 11 [2024-11-13 14:20:34,127 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:34,127 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:34,128 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:34,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184562502] [2024-11-13 14:20:34,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184562502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:34,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:34,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:20:34,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210075883] [2024-11-13 14:20:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:34,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:20:34,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:34,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:20:34,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:20:34,129 INFO L87 Difference]: Start difference. First operand 116 states and 123 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:34,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:34,672 INFO L93 Difference]: Finished difference Result 115 states and 121 transitions. [2024-11-13 14:20:34,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:20:34,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2024-11-13 14:20:34,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:34,674 INFO L225 Difference]: With dead ends: 115 [2024-11-13 14:20:34,674 INFO L226 Difference]: Without dead ends: 115 [2024-11-13 14:20:34,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:20:34,674 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:34,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 120 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:20:34,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-13 14:20:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-13 14:20:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 112 states have internal predecessors, (119), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 121 transitions. [2024-11-13 14:20:34,679 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 121 transitions. Word has length 57 [2024-11-13 14:20:34,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:34,679 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 121 transitions. [2024-11-13 14:20:34,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:34,679 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 121 transitions. [2024-11-13 14:20:34,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-13 14:20:34,680 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:34,680 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:34,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:20:34,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:34,881 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:34,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1620178404, now seen corresponding path program 1 times [2024-11-13 14:20:34,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:34,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902478050] [2024-11-13 14:20:34,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:34,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:34,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:34,884 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:34,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:20:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:35,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:20:35,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:35,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:20:35,758 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 16 treesize of output 12 [2024-11-13 14:20:35,776 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 25 treesize of output 1 [2024-11-13 14:20:35,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2024-11-13 14:20:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:36,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:20:36,028 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:36,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902478050] [2024-11-13 14:20:36,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902478050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:20:36,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:20:36,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:20:36,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256914510] [2024-11-13 14:20:36,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:20:36,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:20:36,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:36,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:20:36,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:20:36,029 INFO L87 Difference]: Start difference. First operand 115 states and 121 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:36,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:36,714 INFO L93 Difference]: Finished difference Result 123 states and 130 transitions. [2024-11-13 14:20:36,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:20:36,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2024-11-13 14:20:36,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:36,716 INFO L225 Difference]: With dead ends: 123 [2024-11-13 14:20:36,717 INFO L226 Difference]: Without dead ends: 123 [2024-11-13 14:20:36,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:20:36,717 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:36,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 118 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:20:36,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-13 14:20:36,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2024-11-13 14:20:36,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 110 states have (on average 1.1454545454545455) internal successors, (126), 118 states have internal predecessors, (126), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2024-11-13 14:20:36,722 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 57 [2024-11-13 14:20:36,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:36,722 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2024-11-13 14:20:36,723 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2024-11-13 14:20:36,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:20:36,723 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:36,724 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:36,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 14:20:36,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:36,924 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:36,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:36,925 INFO L85 PathProgramCache]: Analyzing trace with hash 378634757, now seen corresponding path program 1 times [2024-11-13 14:20:36,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:36,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545481374] [2024-11-13 14:20:36,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:36,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:36,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:36,927 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:36,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:20:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:37,739 INFO L255 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:20:37,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:37,768 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:37,768 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:20:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:37,814 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:37,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545481374] [2024-11-13 14:20:37,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545481374] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:20:37,815 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:20:37,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2024-11-13 14:20:37,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442158552] [2024-11-13 14:20:37,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:20:37,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:20:37,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:20:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:20:37,816 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:37,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:37,921 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2024-11-13 14:20:37,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:20:37,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2024-11-13 14:20:37,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:37,923 INFO L225 Difference]: With dead ends: 148 [2024-11-13 14:20:37,923 INFO L226 Difference]: Without dead ends: 148 [2024-11-13 14:20:37,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:20:37,923 INFO L432 NwaCegarLoop]: 49 mSDtfsCounter, 19 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:37,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 136 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:20:37,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-13 14:20:37,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 145. [2024-11-13 14:20:37,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 134 states have (on average 1.164179104477612) internal successors, (156), 142 states have internal predecessors, (156), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:37,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 158 transitions. [2024-11-13 14:20:37,929 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 158 transitions. Word has length 62 [2024-11-13 14:20:37,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:37,930 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 158 transitions. [2024-11-13 14:20:37,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:37,930 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 158 transitions. [2024-11-13 14:20:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:20:37,931 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:37,931 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:37,962 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 14:20:38,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:38,132 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:38,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:38,132 INFO L85 PathProgramCache]: Analyzing trace with hash 378684728, now seen corresponding path program 1 times [2024-11-13 14:20:38,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:38,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346675103] [2024-11-13 14:20:38,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:20:38,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:38,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:38,135 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:38,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:20:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:20:38,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:20:38,956 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:38,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:20:38,994 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 25 treesize of output 1 [2024-11-13 14:20:39,011 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 16 treesize of output 12 [2024-11-13 14:20:39,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2024-11-13 14:20:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:39,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:20:40,817 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:40,817 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:40,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346675103] [2024-11-13 14:20:40,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346675103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:20:40,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:20:40,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2024-11-13 14:20:40,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472532943] [2024-11-13 14:20:40,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:20:40,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:20:40,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:40,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:20:40,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:20:40,819 INFO L87 Difference]: Start difference. First operand 145 states and 158 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:43,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:43,177 INFO L93 Difference]: Finished difference Result 144 states and 152 transitions. [2024-11-13 14:20:43,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:20:43,179 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2024-11-13 14:20:43,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:43,180 INFO L225 Difference]: With dead ends: 144 [2024-11-13 14:20:43,180 INFO L226 Difference]: Without dead ends: 144 [2024-11-13 14:20:43,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:20:43,181 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 16 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:43,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 177 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 14:20:43,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-13 14:20:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-13 14:20:43,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 134 states have (on average 1.1194029850746268) internal successors, (150), 141 states have internal predecessors, (150), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2024-11-13 14:20:43,187 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 62 [2024-11-13 14:20:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:43,187 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2024-11-13 14:20:43,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2024-11-13 14:20:43,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 14:20:43,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:43,188 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:43,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 14:20:43,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:43,390 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:43,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:43,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1382975977, now seen corresponding path program 2 times [2024-11-13 14:20:43,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:43,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357970955] [2024-11-13 14:20:43,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:20:43,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:43,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:43,394 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:43,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:20:45,088 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:20:45,088 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:20:45,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 14:20:45,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:45,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:20:45,237 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 25 treesize of output 1 [2024-11-13 14:20:45,247 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 16 treesize of output 12 [2024-11-13 14:20:46,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 9 [2024-11-13 14:20:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:46,312 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:20:49,824 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-13 14:20:49,824 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:20:49,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357970955] [2024-11-13 14:20:49,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357970955] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:20:49,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:20:49,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2024-11-13 14:20:49,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874850925] [2024-11-13 14:20:49,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:20:49,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:20:49,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:20:49,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:20:49,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:20:49,827 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:54,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:20:54,937 INFO L93 Difference]: Finished difference Result 210 states and 218 transitions. [2024-11-13 14:20:54,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-13 14:20:54,939 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2024-11-13 14:20:54,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:20:54,939 INFO L225 Difference]: With dead ends: 210 [2024-11-13 14:20:54,939 INFO L226 Difference]: Without dead ends: 210 [2024-11-13 14:20:54,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=335, Invalid=657, Unknown=0, NotChecked=0, Total=992 [2024-11-13 14:20:54,940 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 130 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:20:54,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 279 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-13 14:20:54,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-13 14:20:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 204. [2024-11-13 14:20:54,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 194 states have (on average 1.1134020618556701) internal successors, (216), 201 states have internal predecessors, (216), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:54,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2024-11-13 14:20:54,946 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 77 [2024-11-13 14:20:54,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:20:54,947 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2024-11-13 14:20:54,947 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 21 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:20:54,947 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2024-11-13 14:20:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-13 14:20:54,948 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:20:54,948 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:20:54,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 14:20:55,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:55,148 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:20:55,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:20:55,149 INFO L85 PathProgramCache]: Analyzing trace with hash -69902743, now seen corresponding path program 3 times [2024-11-13 14:20:55,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:20:55,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009872180] [2024-11-13 14:20:55,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:20:55,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:20:55,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:20:55,152 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:20:55,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:20:56,693 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 14:20:56,693 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:20:56,806 INFO L255 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 14:20:56,817 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:20:57,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:20:57,142 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 19 treesize of output 14 [2024-11-13 14:20:57,159 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:20:57,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:21:00,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:00,101 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 19 treesize of output 14 [2024-11-13 14:21:00,119 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:21:00,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:21:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:21:00,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:21:05,744 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:21:05,744 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 58 treesize of output 82 [2024-11-13 14:21:07,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 67 [2024-11-13 14:21:07,359 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:21:07,360 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 65 treesize of output 89 [2024-11-13 14:21:08,517 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:21:08,517 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:21:08,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009872180] [2024-11-13 14:21:08,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009872180] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:21:08,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:21:08,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2024-11-13 14:21:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686175919] [2024-11-13 14:21:08,518 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:21:08,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:21:08,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:21:08,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:21:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:21:08,519 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:21:13,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:21:13,144 INFO L93 Difference]: Finished difference Result 326 states and 338 transitions. [2024-11-13 14:21:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:21:13,147 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2024-11-13 14:21:13,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:21:13,149 INFO L225 Difference]: With dead ends: 326 [2024-11-13 14:21:13,149 INFO L226 Difference]: Without dead ends: 326 [2024-11-13 14:21:13,150 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2024-11-13 14:21:13,151 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 287 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:21:13,151 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 221 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-13 14:21:13,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-13 14:21:13,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2024-11-13 14:21:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 319 states have (on average 1.0532915360501567) internal successors, (336), 323 states have internal predecessors, (336), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:21:13,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 338 transitions. [2024-11-13 14:21:13,161 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 338 transitions. Word has length 107 [2024-11-13 14:21:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:21:13,162 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 338 transitions. [2024-11-13 14:21:13,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.1666666666666665) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:21:13,162 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 338 transitions. [2024-11-13 14:21:13,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 14:21:13,164 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:21:13,164 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:21:13,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 14:21:13,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:21:13,365 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:21:13,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:21:13,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2127981638, now seen corresponding path program 1 times [2024-11-13 14:21:13,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:21:13,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136185218] [2024-11-13 14:21:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:21:13,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:21:13,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:21:13,369 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:21:13,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 14:21:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:21:14,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:21:14,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:21:14,831 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:21:14,831 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:21:14,831 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:21:14,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136185218] [2024-11-13 14:21:14,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136185218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:21:14,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:21:14,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:21:14,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819715558] [2024-11-13 14:21:14,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:21:14,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:21:14,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:21:14,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:21:14,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:21:14,834 INFO L87 Difference]: Start difference. First operand 326 states and 338 transitions. Second operand has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:21:15,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:21:15,139 INFO L93 Difference]: Finished difference Result 325 states and 337 transitions. [2024-11-13 14:21:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:21:15,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 108 [2024-11-13 14:21:15,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:21:15,141 INFO L225 Difference]: With dead ends: 325 [2024-11-13 14:21:15,141 INFO L226 Difference]: Without dead ends: 325 [2024-11-13 14:21:15,142 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:21:15,142 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:21:15,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 69 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:21:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2024-11-13 14:21:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2024-11-13 14:21:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 319 states have (on average 1.0501567398119123) internal successors, (335), 322 states have internal predecessors, (335), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:21:15,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 337 transitions. [2024-11-13 14:21:15,152 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 337 transitions. Word has length 108 [2024-11-13 14:21:15,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:21:15,153 INFO L471 AbstractCegarLoop]: Abstraction has 325 states and 337 transitions. [2024-11-13 14:21:15,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.333333333333334) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:21:15,153 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 337 transitions. [2024-11-13 14:21:15,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-13 14:21:15,154 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:21:15,155 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:21:15,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 14:21:15,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:21:15,355 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:21:15,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:21:15,356 INFO L85 PathProgramCache]: Analyzing trace with hash 2127981639, now seen corresponding path program 1 times [2024-11-13 14:21:15,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:21:15,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2089802480] [2024-11-13 14:21:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:21:15,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:21:15,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:21:15,360 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:21:15,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 14:21:16,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:21:16,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 878 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:21:16,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:21:17,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:17,037 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 19 treesize of output 14 [2024-11-13 14:21:17,057 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:21:17,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:21:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:21:19,873 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:21:23,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2024-11-13 14:21:23,324 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-13 14:21:23,324 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 50 treesize of output 67 [2024-11-13 14:21:23,769 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:21:23,769 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:21:23,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089802480] [2024-11-13 14:21:23,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2089802480] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:21:23,769 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:21:23,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 18 [2024-11-13 14:21:23,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732172768] [2024-11-13 14:21:23,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:21:23,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 14:21:23,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:21:23,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 14:21:23,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2024-11-13 14:21:23,771 INFO L87 Difference]: Start difference. First operand 325 states and 337 transitions. Second operand has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:21:25,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:21:25,745 INFO L93 Difference]: Finished difference Result 324 states and 336 transitions. [2024-11-13 14:21:25,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:21:25,748 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 108 [2024-11-13 14:21:25,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:21:25,750 INFO L225 Difference]: With dead ends: 324 [2024-11-13 14:21:25,750 INFO L226 Difference]: Without dead ends: 324 [2024-11-13 14:21:25,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:21:25,752 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 113 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:21:25,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 226 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 14:21:25,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-13 14:21:25,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2024-11-13 14:21:25,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 319 states have (on average 1.0470219435736676) internal successors, (334), 321 states have internal predecessors, (334), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:21:25,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 336 transitions. [2024-11-13 14:21:25,762 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 336 transitions. Word has length 108 [2024-11-13 14:21:25,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:21:25,762 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 336 transitions. [2024-11-13 14:21:25,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 18 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:21:25,762 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 336 transitions. [2024-11-13 14:21:25,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-13 14:21:25,763 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:21:25,764 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:21:25,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-13 14:21:25,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:21:25,965 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:21:25,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:21:25,965 INFO L85 PathProgramCache]: Analyzing trace with hash 586509966, now seen corresponding path program 1 times [2024-11-13 14:21:25,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:21:25,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1226486215] [2024-11-13 14:21:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:21:25,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:21:25,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:21:25,968 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:21:25,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 14:21:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:21:27,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 900 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:21:27,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:21:27,289 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 11 treesize of output 10 [2024-11-13 14:21:27,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:21:27,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:27,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 16 treesize of output 1 [2024-11-13 14:21:27,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:27,528 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 19 treesize of output 14 [2024-11-13 14:21:27,571 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:21:27,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:21:30,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:21:30,021 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 19 treesize of output 14 [2024-11-13 14:21:30,037 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:21:30,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:21:30,237 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2024-11-13 14:21:30,237 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:21:34,566 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul (_ bv8 64) ((_ sign_extend 32) |c_ULTIMATE.start_main_~i~3#1|)))) (let ((.cse0 (bvadd (_ bv8 64) .cse1 |c_ULTIMATE.start_main_~mem_track~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_main_#t~malloc114#1.base_22| (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc114#1.base_22|))) (forall ((v_ArrVal_1998 (_ BitVec 64))) (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc114#1.base_22| v_ArrVal_1998) |c_ULTIMATE.start_main_~mem_track~0#1.base|))))) (or (bvule (bvadd .cse1 |c_ULTIMATE.start_main_~mem_track~0#1.offset|) .cse0) (forall ((|v_ULTIMATE.start_main_#t~malloc114#1.base_22| (_ BitVec 64))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc114#1.base_22|)))))))) is different from false [2024-11-13 14:21:38,558 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:21:38,558 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 58 treesize of output 82 [2024-11-13 14:21:40,215 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:21:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 380 trivial. 1 not checked. [2024-11-13 14:21:40,246 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:21:40,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226486215] [2024-11-13 14:21:40,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226486215] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:21:40,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:21:40,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 16 [2024-11-13 14:21:40,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465931611] [2024-11-13 14:21:40,247 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:21:40,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 14:21:40,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:21:40,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 14:21:40,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=188, Unknown=1, NotChecked=28, Total=272 [2024-11-13 14:21:40,248 INFO L87 Difference]: Start difference. First operand 324 states and 336 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:21:42,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:21:42,886 INFO L93 Difference]: Finished difference Result 323 states and 333 transitions. [2024-11-13 14:21:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:21:42,888 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 110 [2024-11-13 14:21:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:21:42,890 INFO L225 Difference]: With dead ends: 323 [2024-11-13 14:21:42,890 INFO L226 Difference]: Without dead ends: 323 [2024-11-13 14:21:42,891 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=98, Invalid=285, Unknown=1, NotChecked=36, Total=420 [2024-11-13 14:21:42,891 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 205 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:21:42,892 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 194 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 172 Invalid, 0 Unknown, 66 Unchecked, 1.5s Time] [2024-11-13 14:21:42,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-13 14:21:42,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2024-11-13 14:21:42,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 319 states have (on average 1.0376175548589341) internal successors, (331), 320 states have internal predecessors, (331), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:21:42,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 333 transitions. [2024-11-13 14:21:42,902 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 333 transitions. Word has length 110 [2024-11-13 14:21:42,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:21:42,902 INFO L471 AbstractCegarLoop]: Abstraction has 323 states and 333 transitions. [2024-11-13 14:21:42,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:21:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 333 transitions. [2024-11-13 14:21:42,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-13 14:21:42,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:21:42,904 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:21:42,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 14:21:43,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:21:43,105 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2024-11-13 14:21:43,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:21:43,105 INFO L85 PathProgramCache]: Analyzing trace with hash 431612363, now seen corresponding path program 1 times [2024-11-13 14:21:43,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:21:43,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993649557] [2024-11-13 14:21:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:21:43,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:21:43,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:21:43,109 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:21:43,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f892574-7757-42ba-b565-22f973d21153/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process