./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0237.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0237.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:29:13,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:29:13,798 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:29:13,804 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:29:13,805 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:29:13,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:29:13,835 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:29:13,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:29:13,836 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:29:13,837 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:29:13,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:29:13,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:29:13,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:29:13,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:29:13,840 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:29:13,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:29:13,841 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:29:13,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:29:13,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:29:13,843 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:29:13,844 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:29:13,844 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:29:13,845 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:29:13,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:29:13,846 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:29:13,846 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:29:13,847 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:29:13,847 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:29:13,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:29:13,848 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:29:13,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:29:13,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:29:13,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:29:13,867 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:29:13,867 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:29:13,868 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:29:13,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:29:13,869 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:29:13,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:29:13,870 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:29:13,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:29:13,871 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59c31190ccc8063bc9e40e87ef868627685497d396c28c826c00fa8abad7dfea [2023-11-24 21:29:14,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:29:14,210 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:29:14,213 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:29:14,215 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:29:14,215 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:29:14,217 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/memsafety/test-0237.i [2023-11-24 21:29:17,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:29:17,731 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:29:17,732 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/sv-benchmarks/c/memsafety/test-0237.i [2023-11-24 21:29:17,750 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/data/90a463a51/767c50abf6c048c8b7fdee15a294d6b5/FLAG4a47e0535 [2023-11-24 21:29:17,765 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/data/90a463a51/767c50abf6c048c8b7fdee15a294d6b5 [2023-11-24 21:29:17,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:29:17,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:29:17,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:29:17,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:29:17,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:29:17,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:29:17" (1/1) ... [2023-11-24 21:29:17,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8b018e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:17, skipping insertion in model container [2023-11-24 21:29:17,779 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:29:17" (1/1) ... [2023-11-24 21:29:17,836 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:29:18,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:29:18,292 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:29:18,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:29:18,393 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:29:18,393 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18 WrapperNode [2023-11-24 21:29:18,393 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:29:18,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:29:18,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:29:18,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:29:18,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,431 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,487 INFO L138 Inliner]: procedures = 188, calls = 66, calls flagged for inlining = 14, calls inlined = 14, statements flattened = 221 [2023-11-24 21:29:18,489 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:29:18,490 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:29:18,490 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:29:18,490 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:29:18,502 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,502 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,525 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,562 INFO L175 MemorySlicer]: Split 38 memory accesses to 3 slices as follows [2, 4, 32]. 84 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 18 writes are split as follows [0, 1, 17]. [2023-11-24 21:29:18,562 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,563 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,575 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,590 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:29:18,591 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:29:18,591 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:29:18,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:29:18,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (1/1) ... [2023-11-24 21:29:18,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:29:18,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:18,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:29:18,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:29:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:29:18,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:29:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:29:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:29:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:29:18,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:29:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:29:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:29:18,744 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2023-11-24 21:29:18,744 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2023-11-24 21:29:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:29:18,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 21:29:18,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 21:29:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-24 21:29:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:29:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:29:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:29:18,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:29:18,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:29:18,946 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:29:18,949 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:29:19,579 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:29:19,687 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:29:19,687 INFO L309 CfgBuilder]: Removed 10 assume(true) statements. [2023-11-24 21:29:19,688 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:29:19 BoogieIcfgContainer [2023-11-24 21:29:19,688 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:29:19,691 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:29:19,691 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:29:19,694 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:29:19,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:29:17" (1/3) ... [2023-11-24 21:29:19,695 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c07aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:29:19, skipping insertion in model container [2023-11-24 21:29:19,695 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:29:18" (2/3) ... [2023-11-24 21:29:19,696 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39c07aef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:29:19, skipping insertion in model container [2023-11-24 21:29:19,696 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:29:19" (3/3) ... [2023-11-24 21:29:19,698 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0237.i [2023-11-24 21:29:19,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:29:19,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2023-11-24 21:29:19,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:29:19,779 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1a880487, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:29:19,779 INFO L358 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2023-11-24 21:29:19,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 84 states have (on average 2.2976190476190474) internal successors, (193), 171 states have internal predecessors, (193), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:19,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-24 21:29:19,792 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:19,792 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-24 21:29:19,793 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:19,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:19,799 INFO L85 PathProgramCache]: Analyzing trace with hash 393206, now seen corresponding path program 1 times [2023-11-24 21:29:19,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:19,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60739202] [2023-11-24 21:29:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:19,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:29:19,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:19,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60739202] [2023-11-24 21:29:19,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60739202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:19,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:19,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:29:19,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202344466] [2023-11-24 21:29:19,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:19,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:29:19,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:19,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:29:19,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:29:19,990 INFO L87 Difference]: Start difference. First operand has 179 states, 84 states have (on average 2.2976190476190474) internal successors, (193), 171 states have internal predecessors, (193), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-24 21:29:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:20,072 INFO L93 Difference]: Finished difference Result 179 states and 194 transitions. [2023-11-24 21:29:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:29:20,074 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 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 [2023-11-24 21:29:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:20,084 INFO L225 Difference]: With dead ends: 179 [2023-11-24 21:29:20,084 INFO L226 Difference]: Without dead ends: 178 [2023-11-24 21:29:20,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:29:20,090 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:20,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 169 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:29:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-24 21:29:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2023-11-24 21:29:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 84 states have (on average 2.1547619047619047) internal successors, (181), 170 states have internal predecessors, (181), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:20,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 193 transitions. [2023-11-24 21:29:20,170 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 193 transitions. Word has length 3 [2023-11-24 21:29:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:20,170 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 193 transitions. [2023-11-24 21:29:20,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 1.5) internal successors, (3), 2 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) [2023-11-24 21:29:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 193 transitions. [2023-11-24 21:29:20,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 21:29:20,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:20,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 21:29:20,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:29:20,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:20,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:20,173 INFO L85 PathProgramCache]: Analyzing trace with hash 373275465, now seen corresponding path program 1 times [2023-11-24 21:29:20,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:20,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644101234] [2023-11-24 21:29:20,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:20,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:20,239 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:29:20,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752776906] [2023-11-24 21:29:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:20,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:20,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:20,257 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:20,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:29:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:20,384 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 21:29:20,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:20,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:29:20,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:29:20,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:29:20,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:20,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644101234] [2023-11-24 21:29:20,472 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:29:20,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752776906] [2023-11-24 21:29:20,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752776906] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:20,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:20,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:29:20,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062378055] [2023-11-24 21:29:20,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:20,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:29:20,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:20,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:29:20,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:29:20,476 INFO L87 Difference]: Start difference. First operand 178 states and 193 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:29:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:20,659 INFO L93 Difference]: Finished difference Result 177 states and 192 transitions. [2023-11-24 21:29:20,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:29:20,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-24 21:29:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:20,661 INFO L225 Difference]: With dead ends: 177 [2023-11-24 21:29:20,662 INFO L226 Difference]: Without dead ends: 177 [2023-11-24 21:29:20,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:29:20,663 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 4 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:20,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 270 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:29:20,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-24 21:29:20,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-11-24 21:29:20,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 84 states have (on average 2.142857142857143) internal successors, (180), 169 states have internal predecessors, (180), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:20,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 192 transitions. [2023-11-24 21:29:20,684 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 192 transitions. Word has length 5 [2023-11-24 21:29:20,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:20,684 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 192 transitions. [2023-11-24 21:29:20,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:29:20,686 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 192 transitions. [2023-11-24 21:29:20,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-24 21:29:20,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:20,687 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-24 21:29:20,699 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:29:20,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-24 21:29:20,888 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:20,889 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:20,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1313362439, now seen corresponding path program 1 times [2023-11-24 21:29:20,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:20,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961479495] [2023-11-24 21:29:20,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:20,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:20,903 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:29:20,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34640045] [2023-11-24 21:29:20,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:20,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:20,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:20,905 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:20,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:29:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:21,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 21:29:21,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:21,065 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 7 [2023-11-24 21:29:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:29:21,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:29:21,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961479495] [2023-11-24 21:29:21,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:29:21,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34640045] [2023-11-24 21:29:21,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34640045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:21,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:21,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:29:21,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610473298] [2023-11-24 21:29:21,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:21,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:29:21,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:21,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:29:21,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:29:21,095 INFO L87 Difference]: Start difference. First operand 177 states and 192 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:29:21,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:21,293 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2023-11-24 21:29:21,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:29:21,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-24 21:29:21,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:21,295 INFO L225 Difference]: With dead ends: 184 [2023-11-24 21:29:21,296 INFO L226 Difference]: Without dead ends: 184 [2023-11-24 21:29:21,296 INFO L412 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 [2023-11-24 21:29:21,297 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 9 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:21,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 441 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:29:21,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-24 21:29:21,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-11-24 21:29:21,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 90 states have (on average 2.077777777777778) internal successors, (187), 175 states have internal predecessors, (187), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:21,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 199 transitions. [2023-11-24 21:29:21,312 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 199 transitions. Word has length 6 [2023-11-24 21:29:21,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:21,312 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 199 transitions. [2023-11-24 21:29:21,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:29:21,312 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 199 transitions. [2023-11-24 21:29:21,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 21:29:21,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:21,313 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:21,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:29:21,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:21,523 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:21,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:21,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1870860128, now seen corresponding path program 1 times [2023-11-24 21:29:21,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:21,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583897616] [2023-11-24 21:29:21,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:21,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:21,540 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:29:21,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [475148176] [2023-11-24 21:29:21,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:21,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:21,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:21,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:21,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-24 21:29:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:21,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-24 21:29:21,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:21,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:29:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:29:21,791 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:29:21,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:21,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583897616] [2023-11-24 21:29:21,792 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:29:21,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475148176] [2023-11-24 21:29:21,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475148176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:21,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:21,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:29:21,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338445876] [2023-11-24 21:29:21,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:21,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:29:21,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:29:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:29:21,795 INFO L87 Difference]: Start difference. First operand 184 states and 199 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:29:22,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:22,003 INFO L93 Difference]: Finished difference Result 191 states and 206 transitions. [2023-11-24 21:29:22,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:29:22,004 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-11-24 21:29:22,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:22,006 INFO L225 Difference]: With dead ends: 191 [2023-11-24 21:29:22,006 INFO L226 Difference]: Without dead ends: 191 [2023-11-24 21:29:22,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:29:22,007 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 9 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:22,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 440 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:29:22,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-24 21:29:22,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2023-11-24 21:29:22,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 96 states have (on average 2.0208333333333335) internal successors, (194), 181 states have internal predecessors, (194), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:22,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 206 transitions. [2023-11-24 21:29:22,018 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 206 transitions. Word has length 16 [2023-11-24 21:29:22,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:22,019 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 206 transitions. [2023-11-24 21:29:22,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-24 21:29:22,019 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 206 transitions. [2023-11-24 21:29:22,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-24 21:29:22,021 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:22,021 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:22,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-24 21:29:22,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:22,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:22,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:22,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1135831092, now seen corresponding path program 1 times [2023-11-24 21:29:22,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:22,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758031697] [2023-11-24 21:29:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:22,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:22,263 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:29:22,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793690465] [2023-11-24 21:29:22,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:22,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:22,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:22,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:22,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-24 21:29:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:22,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-24 21:29:22,477 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:22,517 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-11-24 21:29:22,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-24 21:29:22,793 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-24 21:29:22,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:29:22,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:22,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758031697] [2023-11-24 21:29:22,793 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:29:22,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793690465] [2023-11-24 21:29:22,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793690465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:22,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:22,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:29:22,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431609365] [2023-11-24 21:29:22,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:22,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:29:22,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:22,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:29:22,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:29:22,796 INFO L87 Difference]: Start difference. First operand 191 states and 206 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:27,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:27,433 INFO L93 Difference]: Finished difference Result 203 states and 218 transitions. [2023-11-24 21:29:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:29:27,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2023-11-24 21:29:27,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:27,436 INFO L225 Difference]: With dead ends: 203 [2023-11-24 21:29:27,436 INFO L226 Difference]: Without dead ends: 194 [2023-11-24 21:29:27,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2023-11-24 21:29:27,437 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 4 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:27,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 591 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 21:29:27,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-24 21:29:27,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2023-11-24 21:29:27,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 99 states have (on average 1.9898989898989898) internal successors, (197), 184 states have internal predecessors, (197), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:27,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 209 transitions. [2023-11-24 21:29:27,451 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 209 transitions. Word has length 55 [2023-11-24 21:29:27,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:27,451 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 209 transitions. [2023-11-24 21:29:27,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:29:27,452 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 209 transitions. [2023-11-24 21:29:27,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-24 21:29:27,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:27,455 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:27,467 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-24 21:29:27,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:27,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:27,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:27,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1413279444, now seen corresponding path program 1 times [2023-11-24 21:29:27,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:27,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348719605] [2023-11-24 21:29:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:27,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:27,693 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:29:27,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882960179] [2023-11-24 21:29:27,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:27,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:27,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:27,695 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:27,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-24 21:29:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:28,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-24 21:29:28,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:28,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:29:28,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-24 21:29:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 78 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-24 21:29:28,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:29:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 42 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-24 21:29:28,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:28,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348719605] [2023-11-24 21:29:28,454 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:29:28,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882960179] [2023-11-24 21:29:28,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882960179] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:29:28,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:29:28,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-11-24 21:29:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593604704] [2023-11-24 21:29:28,456 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:29:28,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:29:28,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:29:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:29:28,457 INFO L87 Difference]: Start difference. First operand 194 states and 209 transitions. Second operand has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:29:28,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:28,972 INFO L93 Difference]: Finished difference Result 211 states and 227 transitions. [2023-11-24 21:29:28,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-24 21:29:28,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2023-11-24 21:29:28,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:28,975 INFO L225 Difference]: With dead ends: 211 [2023-11-24 21:29:28,975 INFO L226 Difference]: Without dead ends: 199 [2023-11-24 21:29:28,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2023-11-24 21:29:28,976 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 22 mSDsluCounter, 699 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:28,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 860 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 21:29:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-24 21:29:28,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2023-11-24 21:29:28,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 104 states have (on average 1.9423076923076923) internal successors, (202), 189 states have internal predecessors, (202), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:28,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 214 transitions. [2023-11-24 21:29:28,983 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 214 transitions. Word has length 60 [2023-11-24 21:29:28,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:28,983 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 214 transitions. [2023-11-24 21:29:28,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:29:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 214 transitions. [2023-11-24 21:29:28,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-24 21:29:28,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:28,986 INFO L195 NwaCegarLoop]: trace histogram [18, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:28,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-24 21:29:29,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:29,198 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:29,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:29,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2062793804, now seen corresponding path program 2 times [2023-11-24 21:29:29,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:29,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174740208] [2023-11-24 21:29:29,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:29,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:29,242 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:29:29,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550105424] [2023-11-24 21:29:29,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:29:29,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:29,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:29,244 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:29,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-24 21:29:30,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:29:30,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:29:30,138 INFO L262 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-24 21:29:30,145 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:30,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:29:30,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-24 21:29:30,559 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 189 proven. 76 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-24 21:29:30,561 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:29:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 65 proven. 70 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2023-11-24 21:29:31,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:31,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174740208] [2023-11-24 21:29:31,115 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:29:31,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550105424] [2023-11-24 21:29:31,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550105424] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:29:31,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:29:31,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9] total 25 [2023-11-24 21:29:31,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668638976] [2023-11-24 21:29:31,116 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:29:31,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-24 21:29:31,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:31,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-24 21:29:31,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2023-11-24 21:29:31,119 INFO L87 Difference]: Start difference. First operand 199 states and 214 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 21:29:33,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:33,610 INFO L93 Difference]: Finished difference Result 231 states and 258 transitions. [2023-11-24 21:29:33,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-24 21:29:33,611 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 73 [2023-11-24 21:29:33,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:33,612 INFO L225 Difference]: With dead ends: 231 [2023-11-24 21:29:33,613 INFO L226 Difference]: Without dead ends: 216 [2023-11-24 21:29:33,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 367 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=420, Invalid=1742, Unknown=0, NotChecked=0, Total=2162 [2023-11-24 21:29:33,614 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 123 mSDsluCounter, 2328 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:33,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 2486 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-24 21:29:33,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2023-11-24 21:29:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2023-11-24 21:29:33,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 121 states have (on average 1.8099173553719008) internal successors, (219), 206 states have internal predecessors, (219), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:33,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 231 transitions. [2023-11-24 21:29:33,622 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 231 transitions. Word has length 73 [2023-11-24 21:29:33,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:33,623 INFO L495 AbstractCegarLoop]: Abstraction has 216 states and 231 transitions. [2023-11-24 21:29:33,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 24 states have internal predecessors, (60), 2 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-24 21:29:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 231 transitions. [2023-11-24 21:29:33,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-24 21:29:33,625 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:33,625 INFO L195 NwaCegarLoop]: trace histogram [45, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:33,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-24 21:29:33,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-24 21:29:33,837 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:33,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:33,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2085592440, now seen corresponding path program 3 times [2023-11-24 21:29:33,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:33,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763356483] [2023-11-24 21:29:33,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:33,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:33,919 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:29:33,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1368886243] [2023-11-24 21:29:33,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 21:29:33,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:33,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:33,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:33,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-24 21:29:34,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-24 21:29:34,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:29:34,181 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-24 21:29:34,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:34,223 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 7 [2023-11-24 21:29:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1285 trivial. 0 not checked. [2023-11-24 21:29:34,250 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:29:34,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:34,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763356483] [2023-11-24 21:29:34,250 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:29:34,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368886243] [2023-11-24 21:29:34,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368886243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:29:34,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:29:34,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:29:34,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982164645] [2023-11-24 21:29:34,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:29:34,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:29:34,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:34,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:29:34,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:29:34,254 INFO L87 Difference]: Start difference. First operand 216 states and 231 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-24 21:29:34,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:34,483 INFO L93 Difference]: Finished difference Result 215 states and 230 transitions. [2023-11-24 21:29:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:29:34,484 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 100 [2023-11-24 21:29:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:34,486 INFO L225 Difference]: With dead ends: 215 [2023-11-24 21:29:34,486 INFO L226 Difference]: Without dead ends: 215 [2023-11-24 21:29:34,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:29:34,487 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 9 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:34,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 419 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 21:29:34,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-24 21:29:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2023-11-24 21:29:34,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 121 states have (on average 1.8016528925619835) internal successors, (218), 205 states have internal predecessors, (218), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:34,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 230 transitions. [2023-11-24 21:29:34,494 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 230 transitions. Word has length 100 [2023-11-24 21:29:34,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:34,495 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 230 transitions. [2023-11-24 21:29:34,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-24 21:29:34,495 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 230 transitions. [2023-11-24 21:29:34,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-24 21:29:34,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:34,497 INFO L195 NwaCegarLoop]: trace histogram [55, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:34,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-24 21:29:34,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:34,713 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:34,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:34,713 INFO L85 PathProgramCache]: Analyzing trace with hash 283794306, now seen corresponding path program 1 times [2023-11-24 21:29:34,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:34,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979828640] [2023-11-24 21:29:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:34,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:34,805 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:29:34,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167248642] [2023-11-24 21:29:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:34,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:34,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:34,812 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:34,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-24 21:29:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:35,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-24 21:29:35,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:35,414 WARN L876 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2023-11-24 21:29:35,480 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-24 21:29:35,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-24 21:29:35,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 903 proven. 1 refuted. 0 times theorem prover too weak. 891 trivial. 125 not checked. [2023-11-24 21:29:35,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:29:35,861 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-24 21:29:35,861 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 12 treesize of output 11 [2023-11-24 21:29:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 903 proven. 126 refuted. 0 times theorem prover too weak. 891 trivial. 0 not checked. [2023-11-24 21:29:35,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:35,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979828640] [2023-11-24 21:29:35,884 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:29:35,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167248642] [2023-11-24 21:29:35,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167248642] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:29:35,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:29:35,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2023-11-24 21:29:35,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653329748] [2023-11-24 21:29:35,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:29:35,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-24 21:29:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-24 21:29:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=107, Unknown=1, NotChecked=20, Total=156 [2023-11-24 21:29:35,890 INFO L87 Difference]: Start difference. First operand 215 states and 230 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:29:36,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:36,608 INFO L93 Difference]: Finished difference Result 211 states and 226 transitions. [2023-11-24 21:29:36,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 21:29:36,610 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2023-11-24 21:29:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:36,612 INFO L225 Difference]: With dead ends: 211 [2023-11-24 21:29:36,612 INFO L226 Difference]: Without dead ends: 211 [2023-11-24 21:29:36,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 214 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=166, Unknown=1, NotChecked=26, Total=240 [2023-11-24 21:29:36,613 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 24 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 794 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 181 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:36,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 1012 Invalid, 990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 794 Invalid, 0 Unknown, 181 Unchecked, 0.6s Time] [2023-11-24 21:29:36,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-24 21:29:36,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2023-11-24 21:29:36,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 121 states have (on average 1.7685950413223142) internal successors, (214), 201 states have internal predecessors, (214), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:36,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 226 transitions. [2023-11-24 21:29:36,623 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 226 transitions. Word has length 115 [2023-11-24 21:29:36,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:36,624 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 226 transitions. [2023-11-24 21:29:36,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 2 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-24 21:29:36,625 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 226 transitions. [2023-11-24 21:29:36,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-24 21:29:36,636 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:36,636 INFO L195 NwaCegarLoop]: trace histogram [55, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:36,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-24 21:29:36,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-24 21:29:36,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:36,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:36,845 INFO L85 PathProgramCache]: Analyzing trace with hash 283794307, now seen corresponding path program 1 times [2023-11-24 21:29:36,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:36,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088077287] [2023-11-24 21:29:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:36,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:36,929 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:29:36,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27505484] [2023-11-24 21:29:36,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:36,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:36,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:36,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:36,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-24 21:29:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:50,054 INFO L262 TraceCheckSpWp]: Trace formula consists of 1370 conjuncts, 62 conjunts are in the unsatisfiable core [2023-11-24 21:29:50,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:50,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:29:50,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-24 21:29:50,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 989 proven. 430 refuted. 0 times theorem prover too weak. 501 trivial. 0 not checked. [2023-11-24 21:29:50,668 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:29:51,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1920 backedges. 449 proven. 181 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2023-11-24 21:29:51,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:51,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088077287] [2023-11-24 21:29:51,601 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-24 21:29:51,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27505484] [2023-11-24 21:29:51,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27505484] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:29:51,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:29:51,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 38 [2023-11-24 21:29:51,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916972432] [2023-11-24 21:29:51,602 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:29:51,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-24 21:29:51,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:51,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-24 21:29:51,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2023-11-24 21:29:51,605 INFO L87 Difference]: Start difference. First operand 211 states and 226 transitions. Second operand has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 21:29:53,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:53,335 INFO L93 Difference]: Finished difference Result 233 states and 254 transitions. [2023-11-24 21:29:53,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-11-24 21:29:53,336 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2023-11-24 21:29:53,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:53,338 INFO L225 Difference]: With dead ends: 233 [2023-11-24 21:29:53,338 INFO L226 Difference]: Without dead ends: 221 [2023-11-24 21:29:53,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=612, Invalid=3170, Unknown=0, NotChecked=0, Total=3782 [2023-11-24 21:29:53,341 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 61 mSDsluCounter, 3366 mSDsCounter, 0 mSdLazyCounter, 990 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 3524 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:53,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 3524 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 990 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-24 21:29:53,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-11-24 21:29:53,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 215. [2023-11-24 21:29:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 125 states have (on average 1.744) internal successors, (218), 205 states have internal predecessors, (218), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-24 21:29:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 230 transitions. [2023-11-24 21:29:53,350 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 230 transitions. Word has length 115 [2023-11-24 21:29:53,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:53,350 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 230 transitions. [2023-11-24 21:29:53,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 38 states have internal predecessors, (69), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-24 21:29:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 230 transitions. [2023-11-24 21:29:53,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-11-24 21:29:53,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:53,353 INFO L195 NwaCegarLoop]: trace histogram [65, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:53,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-24 21:29:53,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-24 21:29:53,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 84 more)] === [2023-11-24 21:29:53,554 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:53,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1977562813, now seen corresponding path program 2 times [2023-11-24 21:29:53,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:53,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457293985] [2023-11-24 21:29:53,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:53,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:53,652 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-24 21:29:53,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853724627] [2023-11-24 21:29:53,655 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:29:53,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:53,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:53,656 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:53,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11cb1080-680a-45f0-89e0-e536381f6953/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-24 21:30:08,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:30:08,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:30:08,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 1520 conjuncts, 89 conjunts are in the unsatisfiable core [2023-11-24 21:30:08,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:30:08,841 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