./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/config/GemCutterMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing-deref.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW --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 GemCutter --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-17 22:47:20,969 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 22:47:21,078 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/config/svcomp-DerefFreeMemtrack-32bit-GemCutter_Default.epf [2023-11-17 22:47:21,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-17 22:47:21,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-17 22:47:21,163 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 22:47:21,164 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-17 22:47:21,165 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-17 22:47:21,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 22:47:21,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 22:47:21,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 22:47:21,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 22:47:21,178 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 22:47:21,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 22:47:21,181 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 22:47:21,181 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 22:47:21,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 22:47:21,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 22:47:21,183 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-17 22:47:21,183 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-17 22:47:21,184 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-17 22:47:21,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 22:47:21,185 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-17 22:47:21,186 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-17 22:47:21,186 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 22:47:21,187 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 22:47:21,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 22:47:21,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 22:47:21,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 22:47:21,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 22:47:21,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 22:47:21,192 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 22:47:21,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 22:47:21,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 22:47:21,193 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-17 22:47:21,193 INFO L153 SettingsManager]: * Abstraction used for commutativity in POR=VARIABLES_GLOBAL [2023-11-17 22:47:21,193 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2023-11-17 22:47:21,194 INFO L153 SettingsManager]: * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE [2023-11-17 22:47:21,194 INFO L153 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2023-11-17 22:47:21,194 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> GemCutter Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> db5eab03de8fef3e653289c5dcf0b220be6d8b09a4df3c07d6d5a066426e755a [2023-11-17 22:47:21,531 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 22:47:21,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 22:47:21,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 22:47:21,574 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 22:47:21,575 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 22:47:21,576 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing-deref.i [2023-11-17 22:47:24,772 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 22:47:25,126 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 22:47:25,126 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing-deref.i [2023-11-17 22:47:25,146 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/data/20c3b2e7f/342d6a088b1344e9a4e22147331a7a59/FLAG09c6afe63 [2023-11-17 22:47:25,163 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/data/20c3b2e7f/342d6a088b1344e9a4e22147331a7a59 [2023-11-17 22:47:25,171 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 22:47:25,174 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-17 22:47:25,177 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 22:47:25,177 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 22:47:25,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 22:47:25,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 10:47:25" (1/1) ... [2023-11-17 22:47:25,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c06022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:25, skipping insertion in model container [2023-11-17 22:47:25,186 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 10:47:25" (1/1) ... [2023-11-17 22:47:25,234 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 22:47:25,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 22:47:25,885 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 22:47:25,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 22:47:26,014 INFO L206 MainTranslator]: Completed translation [2023-11-17 22:47:26,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26 WrapperNode [2023-11-17 22:47:26,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 22:47:26,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 22:47:26,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 22:47:26,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 22:47:26,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,055 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,100 INFO L138 Inliner]: procedures = 278, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 239 [2023-11-17 22:47:26,100 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 22:47:26,101 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 22:47:26,101 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 22:47:26,101 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 22:47:26,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,135 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,151 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,187 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 22:47:26,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 22:47:26,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 22:47:26,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 22:47:26,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (1/1) ... [2023-11-17 22:47:26,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 22:47:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:26,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 22:47:26,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 22:47:26,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 22:47:26,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 22:47:26,276 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-17 22:47:26,277 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-17 22:47:26,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 22:47:26,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 22:47:26,277 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-17 22:47:26,278 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-17 22:47:26,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 22:47:26,278 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 22:47:26,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 22:47:26,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 22:47:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 22:47:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 22:47:26,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 22:47:26,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 22:47:26,281 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 22:47:26,479 INFO L236 CfgBuilder]: Building ICFG [2023-11-17 22:47:26,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 22:47:27,084 INFO L277 CfgBuilder]: Performing block encoding [2023-11-17 22:47:27,098 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 22:47:27,098 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-17 22:47:27,105 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 10:47:27 BoogieIcfgContainer [2023-11-17 22:47:27,105 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 22:47:27,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 22:47:27,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 22:47:27,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 22:47:27,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 10:47:25" (1/3) ... [2023-11-17 22:47:27,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17acc84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 10:47:27, skipping insertion in model container [2023-11-17 22:47:27,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 10:47:26" (2/3) ... [2023-11-17 22:47:27,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17acc84d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 10:47:27, skipping insertion in model container [2023-11-17 22:47:27,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 10:47:27" (3/3) ... [2023-11-17 22:47:27,124 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing-deref.i [2023-11-17 22:47:27,145 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 22:47:27,145 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-17 22:47:27,145 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 22:47:27,293 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 22:47:27,357 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 22:47:27,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-17 22:47:27,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:27,361 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-17 22:47:27,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2023-11-17 22:47:27,427 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-17 22:47:27,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t2_funThread1of1ForFork0 ======== [2023-11-17 22:47:27,450 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=PARTIAL_ORDER_FA, 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;@44919b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 22:47:27,451 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-17 22:47:28,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-17 22:47:28,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:28,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1333386830, now seen corresponding path program 1 times [2023-11-17 22:47:28,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:28,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529345797] [2023-11-17 22:47:28,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:28,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:28,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 22:47:29,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:29,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529345797] [2023-11-17 22:47:29,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529345797] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:29,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:47:29,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 22:47:29,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315704042] [2023-11-17 22:47:29,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:29,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 22:47:29,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:29,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 22:47:29,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 22:47:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:29,113 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:29,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2023-11-17 22:47:29,114 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:29,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:29,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 22:47:29,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-17 22:47:29,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:29,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1508723484, now seen corresponding path program 1 times [2023-11-17 22:47:29,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:29,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737674529] [2023-11-17 22:47:29,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:29,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:29,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 22:47:29,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737674529] [2023-11-17 22:47:29,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737674529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:47:29,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782650783] [2023-11-17 22:47:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:29,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:29,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:29,845 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:47:29,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 22:47:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:30,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 22:47:30,054 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 22:47:30,096 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 22:47:30,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782650783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:30,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 22:47:30,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-17 22:47:30,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493696395] [2023-11-17 22:47:30,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:30,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 22:47:30,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 22:47:30,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 22:47:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:30,102 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:30,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 62.5) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-11-17 22:47:30,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:30,103 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:30,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:30,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:30,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 22:47:30,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-17 22:47:30,800 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-17 22:47:30,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:30,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1508723485, now seen corresponding path program 1 times [2023-11-17 22:47:30,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:30,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573268247] [2023-11-17 22:47:30,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:30,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 22:47:31,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573268247] [2023-11-17 22:47:31,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573268247] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:47:31,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172092213] [2023-11-17 22:47:31,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:31,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:31,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:31,075 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:47:31,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 22:47:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:31,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 22:47:31,276 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 22:47:31,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 22:47:31,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172092213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:31,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 22:47:31,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-17 22:47:31,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736125489] [2023-11-17 22:47:31,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:31,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 22:47:31,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:31,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 22:47:31,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 22:47:31,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:31,345 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:31,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 62.5) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-11-17 22:47:31,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:31,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:31,346 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:31,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:31,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:31,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:31,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 22:47:32,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-17 22:47:32,087 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-17 22:47:32,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:32,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1781531197, now seen corresponding path program 1 times [2023-11-17 22:47:32,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:32,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5249684] [2023-11-17 22:47:32,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:32,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:32,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 22:47:32,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:32,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5249684] [2023-11-17 22:47:32,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5249684] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:47:32,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229094588] [2023-11-17 22:47:32,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:32,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:32,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:32,339 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:47:32,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 22:47:32,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:32,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 22:47:32,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:32,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 22:47:32,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:47:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 22:47:32,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229094588] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:47:32,722 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 22:47:32,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 22:47:32,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677035492] [2023-11-17 22:47:32,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 22:47:32,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 22:47:32,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:32,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 22:47:32,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-17 22:47:32,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:32,730 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:32,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 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) [2023-11-17 22:47:32,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:32,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:32,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:32,736 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:32,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:32,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 22:47:33,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:33,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-17 22:47:33,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:33,187 INFO L85 PathProgramCache]: Analyzing trace with hash 113537337, now seen corresponding path program 2 times [2023-11-17 22:47:33,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:33,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437107354] [2023-11-17 22:47:33,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:33,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:33,465 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-17 22:47:33,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:33,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437107354] [2023-11-17 22:47:33,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437107354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:47:33,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256844584] [2023-11-17 22:47:33,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 22:47:33,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:33,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:33,468 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:47:33,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 22:47:33,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 22:47:33,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 22:47:33,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 22:47:33,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 22:47:33,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:47:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-17 22:47:34,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256844584] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:47:34,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 22:47:34,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-17 22:47:34,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927119561] [2023-11-17 22:47:34,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 22:47:34,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 22:47:34,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:34,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 22:47:34,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-17 22:47:34,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:34,123 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:34,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.0) internal successors, (247), 19 states have internal predecessors, (247), 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) [2023-11-17 22:47:34,123 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:34,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:34,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:34,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:34,124 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:34,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 22:47:34,569 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-17 22:47:34,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-17 22:47:34,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-17 22:47:34,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-17 22:47:34,570 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-17 22:47:34,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-17 22:47:34,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-17 22:47:34,571 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-17 22:47:34,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-17 22:47:34,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-17 22:47:34,572 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-17 22:47:34,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-17 22:47:34,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 17 remaining) [2023-11-17 22:47:34,573 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 17 remaining) [2023-11-17 22:47:34,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 17 remaining) [2023-11-17 22:47:34,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 17 remaining) [2023-11-17 22:47:34,574 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr16ASSERT_VIOLATIONMEMORY_LEAK (0 of 17 remaining) [2023-11-17 22:47:34,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 22:47:34,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:34,809 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-11-17 22:47:34,811 INFO L307 ceAbstractionStarter]: Result for error location t2_funThread1of1ForFork0 was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/3) [2023-11-17 22:47:34,819 INFO L100 denceProviderFactory]: Independence Relation #1: [IndependenceType=SEMANTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=true, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 22:47:34,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2023-11-17 22:47:34,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:34,821 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2023-11-17 22:47:34,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (7)] Waiting until timeout for monitored process [2023-11-17 22:47:34,830 INFO L159 artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations. [2023-11-17 22:47:34,831 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == t1_funThread1of1ForFork1 ======== [2023-11-17 22:47:34,832 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=PARTIAL_ORDER_FA, 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;@44919b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 22:47:34,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-17 22:47:35,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-17 22:47:35,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:35,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1097968897, now seen corresponding path program 1 times [2023-11-17 22:47:35,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:35,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425238341] [2023-11-17 22:47:35,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:35,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:35,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:35,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425238341] [2023-11-17 22:47:35,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425238341] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:35,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:47:35,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 22:47:35,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375235908] [2023-11-17 22:47:35,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:35,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 22:47:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:35,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 22:47:35,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 22:47:35,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:35,291 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:35,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2023-11-17 22:47:35,292 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:35,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:35,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 22:47:35,368 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-17 22:47:35,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:35,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1227015869, now seen corresponding path program 1 times [2023-11-17 22:47:35,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:35,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865707307] [2023-11-17 22:47:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:35,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:35,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865707307] [2023-11-17 22:47:35,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865707307] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:47:35,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1779744845] [2023-11-17 22:47:35,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:35,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:35,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:35,551 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:47:35,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 22:47:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:35,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 22:47:35,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:35,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:35,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:47:35,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:35,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1779744845] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:47:35,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 22:47:35,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 22:47:35,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134516231] [2023-11-17 22:47:35,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 22:47:35,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 22:47:35,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:35,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 22:47:35,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-17 22:47:35,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:35,976 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:35,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.6) internal successors, (116), 10 states have internal predecessors, (116), 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) [2023-11-17 22:47:35,977 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:35,977 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:36,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:36,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:36,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 22:47:36,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:36,332 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-17 22:47:36,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:36,333 INFO L85 PathProgramCache]: Analyzing trace with hash 492176839, now seen corresponding path program 2 times [2023-11-17 22:47:36,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:36,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951176899] [2023-11-17 22:47:36,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:36,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-11-17 22:47:36,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:36,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951176899] [2023-11-17 22:47:36,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951176899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:36,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:47:36,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 22:47:36,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118796061] [2023-11-17 22:47:36,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:36,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 22:47:36,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:36,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 22:47:36,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 22:47:36,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:36,692 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:36,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 8 states have internal predecessors, (82), 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) [2023-11-17 22:47:36,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:36,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:36,692 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:37,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:37,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 22:47:37,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-17 22:47:37,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:37,011 INFO L85 PathProgramCache]: Analyzing trace with hash 492176840, now seen corresponding path program 1 times [2023-11-17 22:47:37,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:37,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101613030] [2023-11-17 22:47:37,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:37,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:37,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:37,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101613030] [2023-11-17 22:47:37,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101613030] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:47:37,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793838320] [2023-11-17 22:47:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:37,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:37,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:37,414 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:47:37,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 22:47:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:37,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 22:47:37,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:37,754 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:37,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:47:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:37,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793838320] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:47:37,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 22:47:37,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-17 22:47:37,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878809108] [2023-11-17 22:47:37,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 22:47:37,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 22:47:37,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:37,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 22:47:37,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2023-11-17 22:47:37,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:37,909 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:37,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.0) internal successors, (180), 18 states have internal predecessors, (180), 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) [2023-11-17 22:47:37,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:37,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:37,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:37,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:38,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:38,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 22:47:38,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:38,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-17 22:47:38,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:38,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1045532976, now seen corresponding path program 2 times [2023-11-17 22:47:38,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:38,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379657099] [2023-11-17 22:47:38,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:38,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:39,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:39,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379657099] [2023-11-17 22:47:39,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379657099] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:47:39,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192351313] [2023-11-17 22:47:39,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 22:47:39,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:39,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:39,292 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:47:39,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 22:47:39,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 22:47:39,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 22:47:39,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-17 22:47:39,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:39,835 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-17 22:47:39,835 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 22:47:39,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192351313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:39,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 22:47:39,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 24 [2023-11-17 22:47:39,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202559068] [2023-11-17 22:47:39,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:39,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 22:47:39,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:39,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 22:47:39,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-11-17 22:47:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:39,843 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:39,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.25) internal successors, (82), 9 states have internal predecessors, (82), 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) [2023-11-17 22:47:39,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:39,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:39,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:39,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:39,844 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:40,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 22:47:40,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 22:47:40,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:40,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-17 22:47:40,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:40,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1100680487, now seen corresponding path program 1 times [2023-11-17 22:47:40,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:40,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783948207] [2023-11-17 22:47:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:40,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:40,911 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2023-11-17 22:47:40,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:40,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783948207] [2023-11-17 22:47:40,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783948207] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:47:40,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530398033] [2023-11-17 22:47:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:40,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:40,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:40,914 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:47:40,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 22:47:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:41,308 INFO L262 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 22:47:41,314 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:41,634 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 22:47:41,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:47:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 0 proven. 343 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 22:47:42,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530398033] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:47:42,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 22:47:42,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17, 17] total 35 [2023-11-17 22:47:42,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845325001] [2023-11-17 22:47:42,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 22:47:42,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-17 22:47:42,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-17 22:47:42,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=279, Invalid=911, Unknown=0, NotChecked=0, Total=1190 [2023-11-17 22:47:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:42,091 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:42,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 10.228571428571428) internal successors, (358), 35 states have internal predecessors, (358), 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) [2023-11-17 22:47:42,092 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:42,092 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:42,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:42,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:42,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2023-11-17 22:47:42,093 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 22:47:42,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-17 22:47:43,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 22:47:43,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:43,220 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-17 22:47:43,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash 718161438, now seen corresponding path program 1 times [2023-11-17 22:47:43,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:43,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332965198] [2023-11-17 22:47:43,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:43,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2023-11-17 22:47:43,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:43,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332965198] [2023-11-17 22:47:43,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332965198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:43,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:47:43,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 22:47:43,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610313631] [2023-11-17 22:47:43,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:43,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 22:47:43,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:43,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 22:47:43,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 22:47:43,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:43,621 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:43,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 40.5) internal successors, (81), 3 states have internal predecessors, (81), 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) [2023-11-17 22:47:43,621 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:43,622 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:43,622 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:43,622 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:43,622 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2023-11-17 22:47:43,622 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2023-11-17 22:47:43,622 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:43,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 22:47:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-17 22:47:43,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:43,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 22:47:43,738 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-17 22:47:43,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:43,739 INFO L85 PathProgramCache]: Analyzing trace with hash 718161439, now seen corresponding path program 1 times [2023-11-17 22:47:43,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:43,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482975110] [2023-11-17 22:47:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:43,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1695 trivial. 0 not checked. [2023-11-17 22:47:44,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:44,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482975110] [2023-11-17 22:47:44,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482975110] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 22:47:44,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 22:47:44,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 22:47:44,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698300393] [2023-11-17 22:47:44,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 22:47:44,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 22:47:44,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:44,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 22:47:44,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 22:47:44,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:44,085 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:44,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 40.5) internal successors, (81), 3 states have internal predecessors, (81), 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) [2023-11-17 22:47:44,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:44,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:44,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:44,086 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:44,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2023-11-17 22:47:44,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2023-11-17 22:47:44,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:44,087 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:44,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 22:47:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-17 22:47:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:44,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:44,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 22:47:44,213 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-17 22:47:44,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:44,213 INFO L85 PathProgramCache]: Analyzing trace with hash 908006491, now seen corresponding path program 1 times [2023-11-17 22:47:44,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:44,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476119229] [2023-11-17 22:47:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:44,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 0 proven. 1695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:46,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:46,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476119229] [2023-11-17 22:47:46,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476119229] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:47:46,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072862145] [2023-11-17 22:47:46,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:46,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:46,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:46,729 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:47:46,751 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 22:47:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:47,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 1518 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 22:47:47,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:47:47,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 0 proven. 1695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:47,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:47:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1695 backedges. 0 proven. 1695 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:49,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072862145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:47:49,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 22:47:49,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2023-11-17 22:47:49,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133269434] [2023-11-17 22:47:49,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 22:47:49,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-11-17 22:47:49,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:47:49,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-11-17 22:47:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290 [2023-11-17 22:47:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:49,237 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:47:49,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 8.484848484848484) internal successors, (560), 66 states have internal predecessors, (560), 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) [2023-11-17 22:47:49,239 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:49,239 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:49,239 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:49,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:49,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2023-11-17 22:47:49,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2023-11-17 22:47:49,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:49,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:49,240 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:47:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:47:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:47:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 22:47:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-17 22:47:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:47:51,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2023-11-17 22:47:51,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 22:47:52,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 22:47:52,032 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t1_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-17 22:47:52,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 22:47:52,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1701099397, now seen corresponding path program 2 times [2023-11-17 22:47:52,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 22:47:52,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841026116] [2023-11-17 22:47:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 22:47:52,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 22:47:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 22:47:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7471 backedges. 0 proven. 7471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:47:59,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 22:47:59,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841026116] [2023-11-17 22:47:59,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841026116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 22:47:59,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883947519] [2023-11-17 22:47:59,310 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 22:47:59,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 22:47:59,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 [2023-11-17 22:47:59,318 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 22:47:59,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_279b79e1-2c44-4a8a-97d9-31a24e4dfe29/bin/ugemcutter-verify-ztSkJzofpW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 22:48:00,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 22:48:00,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 22:48:00,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 2894 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-17 22:48:00,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 22:48:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7471 backedges. 0 proven. 7471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:48:00,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 22:48:05,838 INFO L134 CoverageAnalysis]: Checked inductivity of 7471 backedges. 0 proven. 7471 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 22:48:05,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883947519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 22:48:05,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 22:48:05,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 130 [2023-11-17 22:48:05,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990722801] [2023-11-17 22:48:05,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 22:48:05,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2023-11-17 22:48:05,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 22:48:05,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2023-11-17 22:48:05,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=12480, Unknown=0, NotChecked=0, Total=16770 [2023-11-17 22:48:05,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 22:48:05,857 INFO L495 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2023-11-17 22:48:05,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 8.246153846153845) internal successors, (1072), 130 states have internal predecessors, (1072), 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) [2023-11-17 22:48:05,859 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:48:05,859 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:48:05,859 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2023-11-17 22:48:05,859 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. [2023-11-17 22:48:05,859 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2023-11-17 22:48:05,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 49 states. [2023-11-17 22:48:05,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:48:05,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2023-11-17 22:48:05,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 93 states. [2023-11-17 22:48:05,860 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.